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Finding the Fourth Proportional to 167.96, 231.89 and 105.85

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Solution

The fourth proportional to 167.96, 231.89 and 105.85 is: 146.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.96 : 231.89 = 105.85 : x
  2. Step 2: Convert to fraction form
    167.96/231.89 = 105.85/x
  3. Step 3: Cross multiply
    167.96x = 231.89 × 105.85
  4. Step 4: Simplify right side
    167.96x = 24,545.56
  5. Step 5: Solve for x
    x = 24,545.56/167.96
  6. Step 6: Final answer
    x = 146.14

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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.