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Finding the Fourth Proportional to 137,625.50, 206,472.93 and 39,129.50

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Solution

The fourth proportional to 137,625.50, 206,472.93 and 39,129.50 is: 58,704.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,625.50 : 206,472.93 = 39,129.50 : x
  2. Step 2: Convert to fraction form
    137,625.50/206,472.93 = 39,129.50/x
  3. Step 3: Cross multiply
    137,625.50x = 206,472.93 × 39,129.50
  4. Step 4: Simplify right side
    137,625.50x = 8,079,182,514.44
  5. Step 5: Solve for x
    x = 8,079,182,514.44/137,625.50
  6. Step 6: Final answer
    x = 58,704.11

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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.