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Finding the Fourth Proportional to 113.97, 170.61 and 94.66

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Solution

The fourth proportional to 113.97, 170.61 and 94.66 is: 141.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.97 : 170.61 = 94.66 : x
  2. Step 2: Convert to fraction form
    113.97/170.61 = 94.66/x
  3. Step 3: Cross multiply
    113.97x = 170.61 × 94.66
  4. Step 4: Simplify right side
    113.97x = 16,149.94
  5. Step 5: Solve for x
    x = 16,149.94/113.97
  6. Step 6: Final answer
    x = 141.70

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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.