IPA: /ˌprəʊpɔːʃəˈnælɪti/
KK: /prəˌpɔrʧəˈnælɪti/
The quality or state of being in proportion, meaning that two or more things are related in a balanced way.
The proportionality of the budget to the population size ensures fair distribution of resources.
Proportionality → It is formed from "proportio" (from Latin, meaning a part in relation to a whole) and the suffix "-ality" (meaning the state or quality of). The word "proportionality" refers to the quality of being in proportion or having a consistent relationship between parts.
Think of the idea of a part being related to a whole — that's what proportionality means, the quality of parts being in relation to each other.