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Finding the Fourth Proportional to 137,611.52, 206,419.20 and 39,115.52

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Solution

The fourth proportional to 137,611.52, 206,419.20 and 39,115.52 is: 58,673.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,611.52 : 206,419.20 = 39,115.52 : x
  2. Step 2: Convert to fraction form
    137,611.52/206,419.20 = 39,115.52/x
  3. Step 3: Cross multiply
    137,611.52x = 206,419.20 × 39,115.52
  4. Step 4: Simplify right side
    137,611.52x = 8,074,194,345.98
  5. Step 5: Solve for x
    x = 8,074,194,345.98/137,611.52
  6. Step 6: Final answer
    x = 58,673.83

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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.