Finding the Fourth Proportional to 161,781.80, 242,721.30 and 115,125.80
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Solution
The fourth proportional to 161,781.80, 242,721.30 and 115,125.80 is: 172,723.28
Step by Step Solution
- Step 1: Write the proportion equation
161,781.80 : 242,721.30 = 115,125.80 : x - Step 2: Convert to fraction form
161,781.80/242,721.30 = 115,125.80/x - Step 3: Cross multiply
161,781.80x = 242,721.30 × 115,125.80 - Step 4: Simplify right side
161,781.80x = 27,943,483,839.54 - Step 5: Solve for x
x = 27,943,483,839.54/161,781.80 - Step 6: Final answer
x = 172,723.28
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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.