Home / 138,172.11-207,258.51-38,337.66

Finding the Fourth Proportional to 138,172.11, 207,258.51 and 38,337.66

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Solution

The fourth proportional to 138,172.11, 207,258.51 and 38,337.66 is: 57,506.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,172.11 : 207,258.51 = 38,337.66 : x
  2. Step 2: Convert to fraction form
    138,172.11/207,258.51 = 38,337.66/x
  3. Step 3: Cross multiply
    138,172.11x = 207,258.51 × 38,337.66
  4. Step 4: Simplify right side
    138,172.11x = 7,945,806,288.49
  5. Step 5: Solve for x
    x = 7,945,806,288.49/138,172.11
  6. Step 6: Final answer
    x = 57,506.59

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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.