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Finding the Fourth Proportional to 168.39, 232.07 and 131.49

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Solution

The fourth proportional to 168.39, 232.07 and 131.49 is: 181.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.39 : 232.07 = 131.49 : x
  2. Step 2: Convert to fraction form
    168.39/232.07 = 131.49/x
  3. Step 3: Cross multiply
    168.39x = 232.07 × 131.49
  4. Step 4: Simplify right side
    168.39x = 30,514.23
  5. Step 5: Solve for x
    x = 30,514.23/168.39
  6. Step 6: Final answer
    x = 181.21

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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.