Home / 82,123.47-123,185.21-19,793.97

Finding the Fourth Proportional to 82,123.47, 123,185.21 and 19,793.97

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Solution

The fourth proportional to 82,123.47, 123,185.21 and 19,793.97 is: 29,690.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,123.47 : 123,185.21 = 19,793.97 : x
  2. Step 2: Convert to fraction form
    82,123.47/123,185.21 = 19,793.97/x
  3. Step 3: Cross multiply
    82,123.47x = 123,185.21 × 19,793.97
  4. Step 4: Simplify right side
    82,123.47x = 2,438,324,252.21
  5. Step 5: Solve for x
    x = 2,438,324,252.21/82,123.47
  6. Step 6: Final answer
    x = 29,690.96

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Similar ratio
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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.