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Finding the Fourth Proportional to 168.38, 232.34 and 106.20

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Solution

The fourth proportional to 168.38, 232.34 and 106.20 is: 146.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.38 : 232.34 = 106.20 : x
  2. Step 2: Convert to fraction form
    168.38/232.34 = 106.20/x
  3. Step 3: Cross multiply
    168.38x = 232.34 × 106.20
  4. Step 4: Simplify right side
    168.38x = 24,674.51
  5. Step 5: Solve for x
    x = 24,674.51/168.38
  6. Step 6: Final answer
    x = 146.54

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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.