Home / 231,631.97-319,657.53-129,654.89

Finding the Fourth Proportional to 231,631.97, 319,657.53 and 129,654.89

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Solution

The fourth proportional to 231,631.97, 319,657.53 and 129,654.89 is: 178,926.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,631.97 : 319,657.53 = 129,654.89 : x
  2. Step 2: Convert to fraction form
    231,631.97/319,657.53 = 129,654.89/x
  3. Step 3: Cross multiply
    231,631.97x = 319,657.53 × 129,654.89
  4. Step 4: Simplify right side
    231,631.97x = 41,445,161,241.55
  5. Step 5: Solve for x
    x = 41,445,161,241.55/231,631.97
  6. Step 6: Final answer
    x = 178,926.78

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1.5x scale

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.