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Finding the Fourth Proportional to 132.59, 182.78 and 111.82

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Solution

The fourth proportional to 132.59, 182.78 and 111.82 is: 154.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.59 : 182.78 = 111.82 : x
  2. Step 2: Convert to fraction form
    132.59/182.78 = 111.82/x
  3. Step 3: Cross multiply
    132.59x = 182.78 × 111.82
  4. Step 4: Simplify right side
    132.59x = 20,438.26
  5. Step 5: Solve for x
    x = 20,438.26/132.59
  6. Step 6: Final answer
    x = 154.15

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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.