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Finding the Fourth Proportional to 141.92, 196.66 and 140.18

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Solution

The fourth proportional to 141.92, 196.66 and 140.18 is: 194.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.92 : 196.66 = 140.18 : x
  2. Step 2: Convert to fraction form
    141.92/196.66 = 140.18/x
  3. Step 3: Cross multiply
    141.92x = 196.66 × 140.18
  4. Step 4: Simplify right side
    141.92x = 27,567.80
  5. Step 5: Solve for x
    x = 27,567.80/141.92
  6. Step 6: Final answer
    x = 194.25

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Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.