Home / 125,251.20-187,876.80-112,785.30

Finding the Fourth Proportional to 125,251.20, 187,876.80 and 112,785.30

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Solution

The fourth proportional to 125,251.20, 187,876.80 and 112,785.30 is: 169,177.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,251.20 : 187,876.80 = 112,785.30 : x
  2. Step 2: Convert to fraction form
    125,251.20/187,876.80 = 112,785.30/x
  3. Step 3: Cross multiply
    125,251.20x = 187,876.80 × 112,785.30
  4. Step 4: Simplify right side
    125,251.20x = 21,189,741,251.04
  5. Step 5: Solve for x
    x = 21,189,741,251.04/125,251.20
  6. Step 6: Final answer
    x = 169,177.95

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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.