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Finding the Fourth Proportional to 140.93, 211.55 and 112.38

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Solution

The fourth proportional to 140.93, 211.55 and 112.38 is: 168.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    140.93 : 211.55 = 112.38 : x
  2. Step 2: Convert to fraction form
    140.93/211.55 = 112.38/x
  3. Step 3: Cross multiply
    140.93x = 211.55 × 112.38
  4. Step 4: Simplify right side
    140.93x = 23,773.43
  5. Step 5: Solve for x
    x = 23,773.43/140.93
  6. Step 6: Final answer
    x = 168.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.