Almost 70 GB of data in your root partition? That does not look normal, so it's possible that you are using it for the wrong purpose.
Older Fedora versions recommended 3 to 5 GB for the root partition:
A 3.0 GB partition allows you to install a minimal installation, while a 5.0 GB root partition lets you perform a full installation, choosing all package groups.
The requirements have been lifted in more recent versions, but still far from the size that you allocated:
For a minimal installation, a 5 GB root partition will be sufficient. However, for most common installations which include extra packages and a graphical user interface, the root partition should be at least 10 GB; with 20 GB being sufficient for most common use cases.
So the question is really: what are you storing in there? Without any additional information, I can only suggest to check your
/var folder, perhaps especially the
/var/cache folder. But generally speaking it's likely that your problem is your