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Finding the Fourth Proportional to 132.70, 199.14 and 92.20

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Solution

The fourth proportional to 132.70, 199.14 and 92.20 is: 138.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.70 : 199.14 = 92.20 : x
  2. Step 2: Convert to fraction form
    132.70/199.14 = 92.20/x
  3. Step 3: Cross multiply
    132.70x = 199.14 × 92.20
  4. Step 4: Simplify right side
    132.70x = 18,360.71
  5. Step 5: Solve for x
    x = 18,360.71/132.70
  6. Step 6: Final answer
    x = 138.36

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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.