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Finding the Fourth Proportional to 113.14, 170.01 and 105.85

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Solution

The fourth proportional to 113.14, 170.01 and 105.85 is: 159.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.14 : 170.01 = 105.85 : x
  2. Step 2: Convert to fraction form
    113.14/170.01 = 105.85/x
  3. Step 3: Cross multiply
    113.14x = 170.01 × 105.85
  4. Step 4: Simplify right side
    113.14x = 17,995.56
  5. Step 5: Solve for x
    x = 17,995.56/113.14
  6. Step 6: Final answer
    x = 159.06

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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.