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Finding the Fourth Proportional to 125,787.50, 188,625.90 and 66,609.35

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Solution

The fourth proportional to 125,787.50, 188,625.90 and 66,609.35 is: 99,884.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,787.50 : 188,625.90 = 66,609.35 : x
  2. Step 2: Convert to fraction form
    125,787.50/188,625.90 = 66,609.35/x
  3. Step 3: Cross multiply
    125,787.50x = 188,625.90 × 66,609.35
  4. Step 4: Simplify right side
    125,787.50x = 12,564,248,592.17
  5. Step 5: Solve for x
    x = 12,564,248,592.17/125,787.50
  6. Step 6: Final answer
    x = 99,884.72

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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.