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Finding the Fourth Proportional to 169.92, 234.52 and 111.66

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Solution

The fourth proportional to 169.92, 234.52 and 111.66 is: 154.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    169.92 : 234.52 = 111.66 : x
  2. Step 2: Convert to fraction form
    169.92/234.52 = 111.66/x
  3. Step 3: Cross multiply
    169.92x = 234.52 × 111.66
  4. Step 4: Simplify right side
    169.92x = 26,186.50
  5. Step 5: Solve for x
    x = 26,186.50/169.92
  6. Step 6: Final answer
    x = 154.11

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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.