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Finding the Fourth Proportional to 132.12, 196.47 and 131.04

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Solution

The fourth proportional to 132.12, 196.47 and 131.04 is: 194.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.12 : 196.47 = 131.04 : x
  2. Step 2: Convert to fraction form
    132.12/196.47 = 131.04/x
  3. Step 3: Cross multiply
    132.12x = 196.47 × 131.04
  4. Step 4: Simplify right side
    132.12x = 25,745.43
  5. Step 5: Solve for x
    x = 25,745.43/132.12
  6. Step 6: Final answer
    x = 194.86

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.