Finding the Fourth Proportional to 161,720,959.20, 242,581,438.80 and 157,469,431.20
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Solution
The fourth proportional to 161,720,959.20, 242,581,438.80 and 157,469,431.20 is: 236,204,146.80
Step by Step Solution
- Step 1: Write the proportion equation
161,720,959.20 : 242,581,438.80 = 157,469,431.20 : x - Step 2: Convert to fraction form
161,720,959.20/242,581,438.80 = 157,469,431.20/x - Step 3: Cross multiply
161,720,959.20x = 242,581,438.80 × 157,469,431.20 - Step 4: Simplify right side
161,720,959.20x = 38,199,161,187,513,608 - Step 5: Solve for x
x = 38,199,161,187,513,608/161,720,959.20 - Step 6: Final answer
x = 236,204,146.80
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.