Home / 102,708.15-141,732.09-57,377.13

Finding the Fourth Proportional to 102,708.15, 141,732.09 and 57,377.13

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Solution

The fourth proportional to 102,708.15, 141,732.09 and 57,377.13 is: 79,177.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    102,708.15 : 141,732.09 = 57,377.13 : x
  2. Step 2: Convert to fraction form
    102,708.15/141,732.09 = 57,377.13/x
  3. Step 3: Cross multiply
    102,708.15x = 141,732.09 × 57,377.13
  4. Step 4: Simplify right side
    102,708.15x = 8,132,180,553.10
  5. Step 5: Solve for x
    x = 8,132,180,553.10/102,708.15
  6. Step 6: Final answer
    x = 79,177.56

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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.