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Finding the Fourth Proportional to 125,939.32, 188,690.82 and 88,428.04

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Solution

The fourth proportional to 125,939.32, 188,690.82 and 88,428.04 is: 132,488.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,939.32 : 188,690.82 = 88,428.04 : x
  2. Step 2: Convert to fraction form
    125,939.32/188,690.82 = 88,428.04/x
  3. Step 3: Cross multiply
    125,939.32x = 188,690.82 × 88,428.04
  4. Step 4: Simplify right side
    125,939.32x = 16,685,559,378.59
  5. Step 5: Solve for x
    x = 16,685,559,378.59/125,939.32
  6. Step 6: Final answer
    x = 132,488.88

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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.