Home / 138,286.92-207,429.02-63,385.80

Finding the Fourth Proportional to 138,286.92, 207,429.02 and 63,385.80

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Solution

The fourth proportional to 138,286.92, 207,429.02 and 63,385.80 is: 95,078.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,286.92 : 207,429.02 = 63,385.80 : x
  2. Step 2: Convert to fraction form
    138,286.92/207,429.02 = 63,385.80/x
  3. Step 3: Cross multiply
    138,286.92x = 207,429.02 × 63,385.80
  4. Step 4: Simplify right side
    138,286.92x = 13,148,054,375.92
  5. Step 5: Solve for x
    x = 13,148,054,375.92/138,286.92
  6. Step 6: Final answer
    x = 95,078.08

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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.