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Finding the Fourth Proportional to 181,781.40, 272,404.80 and 131,966.40

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Solution

The fourth proportional to 181,781.40, 272,404.80 and 131,966.40 is: 197,755.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    181,781.40 : 272,404.80 = 131,966.40 : x
  2. Step 2: Convert to fraction form
    181,781.40/272,404.80 = 131,966.40/x
  3. Step 3: Cross multiply
    181,781.40x = 272,404.80 × 131,966.40
  4. Step 4: Simplify right side
    181,781.40x = 35,948,280,798.72
  5. Step 5: Solve for x
    x = 35,948,280,798.72/181,781.40
  6. Step 6: Final answer
    x = 197,755.55

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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.