Home / 138,055.38-207,082.83-38,215.29

Finding the Fourth Proportional to 138,055.38, 207,082.83 and 38,215.29

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Solution

The fourth proportional to 138,055.38, 207,082.83 and 38,215.29 is: 57,322.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,055.38 : 207,082.83 = 38,215.29 : x
  2. Step 2: Convert to fraction form
    138,055.38/207,082.83 = 38,215.29/x
  3. Step 3: Cross multiply
    138,055.38x = 207,082.83 × 38,215.29
  4. Step 4: Simplify right side
    138,055.38x = 7,913,730,402.47
  5. Step 5: Solve for x
    x = 7,913,730,402.47/138,055.38
  6. Step 6: Final answer
    x = 57,322.87

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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.