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Finding the Fourth Proportional to 111.11, 167.58 and 110.43

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Solution

The fourth proportional to 111.11, 167.58 and 110.43 is: 166.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    111.11 : 167.58 = 110.43 : x
  2. Step 2: Convert to fraction form
    111.11/167.58 = 110.43/x
  3. Step 3: Cross multiply
    111.11x = 167.58 × 110.43
  4. Step 4: Simplify right side
    111.11x = 18,505.86
  5. Step 5: Solve for x
    x = 18,505.86/111.11
  6. Step 6: Final answer
    x = 166.56

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.