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Finding the Fourth Proportional to 167.82, 231.68 and 112.62

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Solution

The fourth proportional to 167.82, 231.68 and 112.62 is: 155.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.82 : 231.68 = 112.62 : x
  2. Step 2: Convert to fraction form
    167.82/231.68 = 112.62/x
  3. Step 3: Cross multiply
    167.82x = 231.68 × 112.62
  4. Step 4: Simplify right side
    167.82x = 26,091.80
  5. Step 5: Solve for x
    x = 26,091.80/167.82
  6. Step 6: Final answer
    x = 155.47

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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.