Home / 138,368.38-207,618.18-82,319.22

Finding the Fourth Proportional to 138,368.38, 207,618.18 and 82,319.22

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Solution

The fourth proportional to 138,368.38, 207,618.18 and 82,319.22 is: 123,517.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,368.38 : 207,618.18 = 82,319.22 : x
  2. Step 2: Convert to fraction form
    138,368.38/207,618.18 = 82,319.22/x
  3. Step 3: Cross multiply
    138,368.38x = 207,618.18 × 82,319.22
  4. Step 4: Simplify right side
    138,368.38x = 17,090,965,597.33
  5. Step 5: Solve for x
    x = 17,090,965,597.33/138,368.38
  6. Step 6: Final answer
    x = 123,517.86

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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.