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Finding the Fourth Proportional to 141.85, 195.65 and 106.89

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Solution

The fourth proportional to 141.85, 195.65 and 106.89 is: 147.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.85 : 195.65 = 106.89 : x
  2. Step 2: Convert to fraction form
    141.85/195.65 = 106.89/x
  3. Step 3: Cross multiply
    141.85x = 195.65 × 106.89
  4. Step 4: Simplify right side
    141.85x = 20,912.49
  5. Step 5: Solve for x
    x = 20,912.49/141.85
  6. Step 6: Final answer
    x = 147.43

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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.