Below is an instruction that describes a task. Write a response that appropriately completes the request in Swahili. Please answer in Swahili.

### Instruction:
The tallest building in the world is 100 feet tall.  If the second tallest is half that tall, and the third tallest is half as tall as the second, and the fourth is one-fifth as tall as the third, how tall are all 4 buildings put together?

### Response:
 Jengo refu zaidi lina urefu wa futi 100, jengo la pili refu ni nusu ya urefu wa futi 100, hivyo ni futi 50. Jengo la tatu refu ni nusu ya urefu wa futi 50, hivyo ni futi 25. Jengo la nne ni moja ya tano ya urefu wa futi 25, hivyo ni futi 5. Majengo yote 4 pamoja yana urefu wa futi 100 + 50 + 25 + 5 = <<100+50+25+5=180>>180.