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Finding the Fourth Proportional to 168.70, 232.78 and 106.54

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Solution

The fourth proportional to 168.70, 232.78 and 106.54 is: 147.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.70 : 232.78 = 106.54 : x
  2. Step 2: Convert to fraction form
    168.70/232.78 = 106.54/x
  3. Step 3: Cross multiply
    168.70x = 232.78 × 106.54
  4. Step 4: Simplify right side
    168.70x = 24,800.38
  5. Step 5: Solve for x
    x = 24,800.38/168.70
  6. Step 6: Final answer
    x = 147.01

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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.