Finding the Fourth Proportional to 121,916,101.07, 168,244,659.96 and 66,161,509.37
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Solution
The fourth proportional to 121,916,101.07, 168,244,659.96 and 66,161,509.37 is: 91,303,121.97
Step by Step Solution
- Step 1: Write the proportion equation
121,916,101.07 : 168,244,659.96 = 66,161,509.37 : x - Step 2: Convert to fraction form
121,916,101.07/168,244,659.96 = 66,161,509.37/x - Step 3: Cross multiply
121,916,101.07x = 168,244,659.96 × 66,161,509.37 - Step 4: Simplify right side
121,916,101.07x = 11,131,320,645,937,592 - Step 5: Solve for x
x = 11,131,320,645,937,592/121,916,101.07 - Step 6: Final answer
x = 91,303,121.97
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.