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Finding the Fourth Proportional to 138,801.73, 208,171.47 and 63,849.91

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Solution

The fourth proportional to 138,801.73, 208,171.47 and 63,849.91 is: 95,760.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,801.73 : 208,171.47 = 63,849.91 : x
  2. Step 2: Convert to fraction form
    138,801.73/208,171.47 = 63,849.91/x
  3. Step 3: Cross multiply
    138,801.73x = 208,171.47 × 63,849.91
  4. Step 4: Simplify right side
    138,801.73x = 13,291,729,624.07
  5. Step 5: Solve for x
    x = 13,291,729,624.07/138,801.73
  6. Step 6: Final answer
    x = 95,760.55

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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.