Home / 138,020.98-207,031.55-43,258.55

Finding the Fourth Proportional to 138,020.98, 207,031.55 and 43,258.55

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Solution

The fourth proportional to 138,020.98, 207,031.55 and 43,258.55 is: 64,887.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,020.98 : 207,031.55 = 43,258.55 : x
  2. Step 2: Convert to fraction form
    138,020.98/207,031.55 = 43,258.55/x
  3. Step 3: Cross multiply
    138,020.98x = 207,031.55 × 43,258.55
  4. Step 4: Simplify right side
    138,020.98x = 8,955,884,031.53
  5. Step 5: Solve for x
    x = 8,955,884,031.53/138,020.98
  6. Step 6: Final answer
    x = 64,887.85

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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.