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Finding the Fourth Proportional to 168.66, 232.68 and 112.71

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Solution

The fourth proportional to 168.66, 232.68 and 112.71 is: 155.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.66 : 232.68 = 112.71 : x
  2. Step 2: Convert to fraction form
    168.66/232.68 = 112.71/x
  3. Step 3: Cross multiply
    168.66x = 232.68 × 112.71
  4. Step 4: Simplify right side
    168.66x = 26,225.36
  5. Step 5: Solve for x
    x = 26,225.36/168.66
  6. Step 6: Final answer
    x = 155.49

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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.