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Finding the Fourth Proportional to 138,800.74, 208,169.96 and 63,848.90

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Solution

The fourth proportional to 138,800.74, 208,169.96 and 63,848.90 is: 95,759.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,800.74 : 208,169.96 = 63,848.90 : x
  2. Step 2: Convert to fraction form
    138,800.74/208,169.96 = 63,848.90/x
  3. Step 3: Cross multiply
    138,800.74x = 208,169.96 × 63,848.90
  4. Step 4: Simplify right side
    138,800.74x = 13,291,422,959.04
  5. Step 5: Solve for x
    x = 13,291,422,959.04/138,800.74
  6. Step 6: Final answer
    x = 95,759.02

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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.