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Finding the Fourth Proportional to 136,125.87, 187,849.43 and 75,694.91

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Solution

The fourth proportional to 136,125.87, 187,849.43 and 75,694.91 is: 104,456.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,125.87 : 187,849.43 = 75,694.91 : x
  2. Step 2: Convert to fraction form
    136,125.87/187,849.43 = 75,694.91/x
  3. Step 3: Cross multiply
    136,125.87x = 187,849.43 × 75,694.91
  4. Step 4: Simplify right side
    136,125.87x = 14,219,244,663.54
  5. Step 5: Solve for x
    x = 14,219,244,663.54/136,125.87
  6. Step 6: Final answer
    x = 104,456.60

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.