Home / 231,781.19-319,831.61-129,792.47

Finding the Fourth Proportional to 231,781.19, 319,831.61 and 129,792.47

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Solution

The fourth proportional to 231,781.19, 319,831.61 and 129,792.47 is: 179,098.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,781.19 : 319,831.61 = 129,792.47 : x
  2. Step 2: Convert to fraction form
    231,781.19/319,831.61 = 129,792.47/x
  3. Step 3: Cross multiply
    231,781.19x = 319,831.61 × 129,792.47
  4. Step 4: Simplify right side
    231,781.19x = 41,511,732,397.86
  5. Step 5: Solve for x
    x = 41,511,732,397.86/231,781.19
  6. Step 6: Final answer
    x = 179,098.80

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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.