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Finding the Fourth Proportional to 108,331.20, 162,496.80 and 98,489.70

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Solution

The fourth proportional to 108,331.20, 162,496.80 and 98,489.70 is: 147,734.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,331.20 : 162,496.80 = 98,489.70 : x
  2. Step 2: Convert to fraction form
    108,331.20/162,496.80 = 98,489.70/x
  3. Step 3: Cross multiply
    108,331.20x = 162,496.80 × 98,489.70
  4. Step 4: Simplify right side
    108,331.20x = 16,004,261,082.96
  5. Step 5: Solve for x
    x = 16,004,261,082.96/108,331.20
  6. Step 6: Final answer
    x = 147,734.55

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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.