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Finding the Fourth Proportional to 168,489.40, 252,734.10 and 112,502.20

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Solution

The fourth proportional to 168,489.40, 252,734.10 and 112,502.20 is: 168,753.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,489.40 : 252,734.10 = 112,502.20 : x
  2. Step 2: Convert to fraction form
    168,489.40/252,734.10 = 112,502.20/x
  3. Step 3: Cross multiply
    168,489.40x = 252,734.10 × 112,502.20
  4. Step 4: Simplify right side
    168,489.40x = 28,433,142,265.02
  5. Step 5: Solve for x
    x = 28,433,142,265.02/168,489.40
  6. Step 6: Final answer
    x = 168,753.30

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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.