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Finding the Fourth Proportional to 125,572.20, 188,358.30 and 83,508.90

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Solution

The fourth proportional to 125,572.20, 188,358.30 and 83,508.90 is: 125,263.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,572.20 : 188,358.30 = 83,508.90 : x
  2. Step 2: Convert to fraction form
    125,572.20/188,358.30 = 83,508.90/x
  3. Step 3: Cross multiply
    125,572.20x = 188,358.30 × 83,508.90
  4. Step 4: Simplify right side
    125,572.20x = 15,729,594,438.87
  5. Step 5: Solve for x
    x = 15,729,594,438.87/125,572.20
  6. Step 6: Final answer
    x = 125,263.35

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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.