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Finding the Fourth Proportional to 168.67, 232.78 and 113.52

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Solution

The fourth proportional to 168.67, 232.78 and 113.52 is: 156.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    168.67 : 232.78 = 113.52 : x
  2. Step 2: Convert to fraction form
    168.67/232.78 = 113.52/x
  3. Step 3: Cross multiply
    168.67x = 232.78 × 113.52
  4. Step 4: Simplify right side
    168.67x = 26,425.19
  5. Step 5: Solve for x
    x = 26,425.19/168.67
  6. Step 6: Final answer
    x = 156.67

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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.