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Finding the Fourth Proportional to 146.76, 220.23 and 112.43

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Solution

The fourth proportional to 146.76, 220.23 and 112.43 is: 168.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    146.76 : 220.23 = 112.43 : x
  2. Step 2: Convert to fraction form
    146.76/220.23 = 112.43/x
  3. Step 3: Cross multiply
    146.76x = 220.23 × 112.43
  4. Step 4: Simplify right side
    146.76x = 24,759.36
  5. Step 5: Solve for x
    x = 24,759.36/146.76
  6. Step 6: Final answer
    x = 168.70

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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.