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Finding the Fourth Proportional to 113.06, 169.62 and 67.46

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Solution

The fourth proportional to 113.06, 169.62 and 67.46 is: 101.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    113.06 : 169.62 = 67.46 : x
  2. Step 2: Convert to fraction form
    113.06/169.62 = 67.46/x
  3. Step 3: Cross multiply
    113.06x = 169.62 × 67.46
  4. Step 4: Simplify right side
    113.06x = 11,442.57
  5. Step 5: Solve for x
    x = 11,442.57/113.06
  6. Step 6: Final answer
    x = 101.21

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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.