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Finding the Fourth Proportional to 141.44, 194.90 and 106.47

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Solution

The fourth proportional to 141.44, 194.90 and 106.47 is: 146.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    141.44 : 194.90 = 106.47 : x
  2. Step 2: Convert to fraction form
    141.44/194.90 = 106.47/x
  3. Step 3: Cross multiply
    141.44x = 194.90 × 106.47
  4. Step 4: Simplify right side
    141.44x = 20,750.47
  5. Step 5: Solve for x
    x = 20,750.47/141.44
  6. Step 6: Final answer
    x = 146.71

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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.