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Finding the Fourth Proportional to 138,808.80, 208,182.04 and 63,856.96

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Solution

The fourth proportional to 138,808.80, 208,182.04 and 63,856.96 is: 95,771.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,808.80 : 208,182.04 = 63,856.96 : x
  2. Step 2: Convert to fraction form
    138,808.80/208,182.04 = 63,856.96/x
  3. Step 3: Cross multiply
    138,808.80x = 208,182.04 × 63,856.96
  4. Step 4: Simplify right side
    138,808.80x = 13,293,872,201.00
  5. Step 5: Solve for x
    x = 13,293,872,201.00/138,808.80
  6. Step 6: Final answer
    x = 95,771.11

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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.