Home / 68,126.22-102,177.30-20,729.88

Finding the Fourth Proportional to 68,126.22, 102,177.30 and 20,729.88

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Solution

The fourth proportional to 68,126.22, 102,177.30 and 20,729.88 is: 31,091.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,126.22 : 102,177.30 = 20,729.88 : x
  2. Step 2: Convert to fraction form
    68,126.22/102,177.30 = 20,729.88/x
  3. Step 3: Cross multiply
    68,126.22x = 102,177.30 × 20,729.88
  4. Step 4: Simplify right side
    68,126.22x = 2,118,123,167.72
  5. Step 5: Solve for x
    x = 2,118,123,167.72/68,126.22
  6. Step 6: Final answer
    x = 31,091.16

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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.