Find the odd one out:

104 :78 = 104/26 : 78/26
=4 : 3
64 : 48 = 64/16 : 48/16
= 4 :3
80 : 60 = 80/20 : 60/20
= 4 : 3
But, 96 :80 = 96/16 : 80/16
= 6 : 5
The odd is 96 : 80 because its ratio is 6 : 5 but rest of ratio is 4 : 3.