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Finding the Fourth Proportional to 132.42, 198.36 and 106.60

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Solution

The fourth proportional to 132.42, 198.36 and 106.60 is: 159.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.42 : 198.36 = 106.60 : x
  2. Step 2: Convert to fraction form
    132.42/198.36 = 106.60/x
  3. Step 3: Cross multiply
    132.42x = 198.36 × 106.60
  4. Step 4: Simplify right side
    132.42x = 21,145.18
  5. Step 5: Solve for x
    x = 21,145.18/132.42
  6. Step 6: Final answer
    x = 159.68

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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.