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Finding the Fourth Proportional to 132.88, 198.99 and 112.53

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Solution

The fourth proportional to 132.88, 198.99 and 112.53 is: 168.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.88 : 198.99 = 112.53 : x
  2. Step 2: Convert to fraction form
    132.88/198.99 = 112.53/x
  3. Step 3: Cross multiply
    132.88x = 198.99 × 112.53
  4. Step 4: Simplify right side
    132.88x = 22,392.34
  5. Step 5: Solve for x
    x = 22,392.34/132.88
  6. Step 6: Final answer
    x = 168.52

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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.