Storage almost full: Others=160Gb - How do I free this ?

Hi people,

I hope that someone can help me here.

I have this new MacBook Pro Retina Display with 250 Gb Flashstorage. I am using it since 3 months and buyed it while I was on a travel to Chile but I actually live in Argentina far of Buenos Aires..

The storage seem to be full with unknown files classified as "Others". 160 Gb of unknown.

I have used "Disk Inventory X" to check where is the space taken, but the SUM of everything is roughly 90 Gb.

Screenshot of Storage Profiler Tools in GDrive

Do anyone know how can I free this space ?

I am 3 months old with apple MacBook so I am quite newbie.

Thanks in advance!

Diego