Warehouse management volume of the item and location

Hi experts, 

I have an item it has a volume of 8.00  weight 150.00 ( defined under physical dimension) 

But when i create a PO for the item.  The volume is shown as 0.00 and weight is shown as 150.00 under the load tab of line detail. 

In the same way i defined the volume in the location profile. but in the location it shows a different volume than what i have defined for the location profile.   in the location profile id i have volume of 125.00 

but in the inventory location under Inventory module shows the volume as  72576.00

( i opened the query (Qtrl + F3) in the inventory location under inventory module and set "Use warehouse management processes"  = Yes)

Where am i going wong. ??