ratable
adjective
rat·able ˈrā-tə-bəl 
variants or rateable
: capable of being rated, estimated, or apportioned
ratably
ˈrā-tə-blē
adverb 
Example Sentences
Recent Examples on the Web Most leases require you to pay your ratable share of operating expenses, property taxes, insurance and common area maintenance (CAM) charges in addition to your base rent. 
Marc Betesh, Forbes, 18 June 2021
Marc Betesh, Forbes, 18 June 2021 Word History
First Known Use
1503, in the meaning defined above
Legal Definition
ratable
adjective
rat·able
ˈrā-tə-bəl
: made or calculated according to a proportionate rate : pro rata
a ratable distribution of the bankruptcy estate