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Finding the Fourth Proportional to 168.14, 252.59 and 119.70

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Solution

The fourth proportional to 168.14, 252.59 and 119.70 is: 179.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.14 : 252.59 = 119.70 : x
  2. Step 2: Convert to fraction form
    168.14/252.59 = 119.70/x
  3. Step 3: Cross multiply
    168.14x = 252.59 × 119.70
  4. Step 4: Simplify right side
    168.14x = 30,234.42
  5. Step 5: Solve for x
    x = 30,234.42/168.14
  6. Step 6: Final answer
    x = 179.82

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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.