Home / 231,660.83-319,689.50-129,687.13

Finding the Fourth Proportional to 231,660.83, 319,689.50 and 129,687.13

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Solution

The fourth proportional to 231,660.83, 319,689.50 and 129,687.13 is: 178,966.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,660.83 : 319,689.50 = 129,687.13 : x
  2. Step 2: Convert to fraction form
    231,660.83/319,689.50 = 129,687.13/x
  3. Step 3: Cross multiply
    231,660.83x = 319,689.50 × 129,687.13
  4. Step 4: Simplify right side
    231,660.83x = 41,459,612,298.48
  5. Step 5: Solve for x
    x = 41,459,612,298.48/231,660.83
  6. Step 6: Final answer
    x = 178,966.86

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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.