To find the total number of cells in the three petri dishes, we can sum the number of cells in each dish:
- First dish: 22,340 cells
- Second dish: 43,560 cells
- Third dish: 36,612 cells
Now, let's add them together:
\[ 22,340 + 43,560 + 36,612 = 102,512 \]
Now we can determine which of the options is closest to this total:
- 100,000
- 1,000,000
- 10,000
- 150,000
The closest option is 100,000.