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Finding the Fourth Proportional to 168.15, 232.06 and 140.47

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Solution

The fourth proportional to 168.15, 232.06 and 140.47 is: 193.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.15 : 232.06 = 140.47 : x
  2. Step 2: Convert to fraction form
    168.15/232.06 = 140.47/x
  3. Step 3: Cross multiply
    168.15x = 232.06 × 140.47
  4. Step 4: Simplify right side
    168.15x = 32,597.47
  5. Step 5: Solve for x
    x = 32,597.47/168.15
  6. Step 6: Final answer
    x = 193.86

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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.