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Finding the Fourth Proportional to 168,311.75, 252,466.90 and 68,471.12

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Solution

The fourth proportional to 168,311.75, 252,466.90 and 68,471.12 is: 102,706.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,311.75 : 252,466.90 = 68,471.12 : x
  2. Step 2: Convert to fraction form
    168,311.75/252,466.90 = 68,471.12/x
  3. Step 3: Cross multiply
    168,311.75x = 252,466.90 × 68,471.12
  4. Step 4: Simplify right side
    168,311.75x = 17,286,691,865.92
  5. Step 5: Solve for x
    x = 17,286,691,865.92/168,311.75
  6. Step 6: Final answer
    x = 102,706.39

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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.