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Finding the Fourth Proportional to 168.40, 232.02 and 140.62

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Solution

The fourth proportional to 168.40, 232.02 and 140.62 is: 193.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.40 : 232.02 = 140.62 : x
  2. Step 2: Convert to fraction form
    168.40/232.02 = 140.62/x
  3. Step 3: Cross multiply
    168.40x = 232.02 × 140.62
  4. Step 4: Simplify right side
    168.40x = 32,626.65
  5. Step 5: Solve for x
    x = 32,626.65/168.40
  6. Step 6: Final answer
    x = 193.74

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.