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Finding the Fourth Proportional to 167.16, 230.82 and 111.88

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Solution

The fourth proportional to 167.16, 230.82 and 111.88 is: 154.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    167.16 : 230.82 = 111.88 : x
  2. Step 2: Convert to fraction form
    167.16/230.82 = 111.88/x
  3. Step 3: Cross multiply
    167.16x = 230.82 × 111.88
  4. Step 4: Simplify right side
    167.16x = 25,824.14
  5. Step 5: Solve for x
    x = 25,824.14/167.16
  6. Step 6: Final answer
    x = 154.49

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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.