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Finding the Fourth Proportional to 138,761.81, 208,225.75 and 59,876.03

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Solution

The fourth proportional to 138,761.81, 208,225.75 and 59,876.03 is: 89,849.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,761.81 : 208,225.75 = 59,876.03 : x
  2. Step 2: Convert to fraction form
    138,761.81/208,225.75 = 59,876.03/x
  3. Step 3: Cross multiply
    138,761.81x = 208,225.75 × 59,876.03
  4. Step 4: Simplify right side
    138,761.81x = 12,467,731,624.65
  5. Step 5: Solve for x
    x = 12,467,731,624.65/138,761.81
  6. Step 6: Final answer
    x = 89,849.88

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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.