Statement:
Sri Lanka has lower GDP than Tonga

In the Richest countries rating Sri Lanka holds position #123 2020 out of 191 and Tonga is #106 out of 191 2020.
Position of Sri Lanka is worse than position of Tonga.

Referencies:

  1. Richest countries 2020 by World Bank
    The countries in the rating sorted by 'GDP per capita (current US$)' in descending order.
    Sri Lanka 'GDP per capita (current US$)' value is 3,694.04
    Tonga 'GDP per capita (current US$)' value is 4,624.82