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Finding the Fourth Proportional to 141.88, 195.72 and 106.96

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Solution

The fourth proportional to 141.88, 195.72 and 106.96 is: 147.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.88 : 195.72 = 106.96 : x
  2. Step 2: Convert to fraction form
    141.88/195.72 = 106.96/x
  3. Step 3: Cross multiply
    141.88x = 195.72 × 106.96
  4. Step 4: Simplify right side
    141.88x = 20,934.21
  5. Step 5: Solve for x
    x = 20,934.21/141.88
  6. Step 6: Final answer
    x = 147.55

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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.