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Finding the Fourth Proportional to 138,402.87, 207,443.01 and 63,530.92

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Solution

The fourth proportional to 138,402.87, 207,443.01 and 63,530.92 is: 95,222.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,402.87 : 207,443.01 = 63,530.92 : x
  2. Step 2: Convert to fraction form
    138,402.87/207,443.01 = 63,530.92/x
  3. Step 3: Cross multiply
    138,402.87x = 207,443.01 × 63,530.92
  4. Step 4: Simplify right side
    138,402.87x = 13,179,045,272.87
  5. Step 5: Solve for x
    x = 13,179,045,272.87/138,402.87
  6. Step 6: Final answer
    x = 95,222.34

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1.5x scale

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.