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Finding the Fourth Proportional to 132.81, 183.05 and 112.14

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Solution

The fourth proportional to 132.81, 183.05 and 112.14 is: 154.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.81 : 183.05 = 112.14 : x
  2. Step 2: Convert to fraction form
    132.81/183.05 = 112.14/x
  3. Step 3: Cross multiply
    132.81x = 183.05 × 112.14
  4. Step 4: Simplify right side
    132.81x = 20,526.67
  5. Step 5: Solve for x
    x = 20,526.67/132.81
  6. Step 6: Final answer
    x = 154.56

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.