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Finding the Fourth Proportional to 138,313.80, 207,422.10 and 63,469.80

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Solution

The fourth proportional to 138,313.80, 207,422.10 and 63,469.80 is: 95,182.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,313.80 : 207,422.10 = 63,469.80 : x
  2. Step 2: Convert to fraction form
    138,313.80/207,422.10 = 63,469.80/x
  3. Step 3: Cross multiply
    138,313.80x = 207,422.10 × 63,469.80
  4. Step 4: Simplify right side
    138,313.80x = 13,165,039,202.58
  5. Step 5: Solve for x
    x = 13,165,039,202.58/138,313.80
  6. Step 6: Final answer
    x = 95,182.40

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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.