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Finding the Fourth Proportional to 132.68, 182.90 and 93.80

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Solution

The fourth proportional to 132.68, 182.90 and 93.80 is: 129.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.68 : 182.90 = 93.80 : x
  2. Step 2: Convert to fraction form
    132.68/182.90 = 93.80/x
  3. Step 3: Cross multiply
    132.68x = 182.90 × 93.80
  4. Step 4: Simplify right side
    132.68x = 17,156.02
  5. Step 5: Solve for x
    x = 17,156.02/132.68
  6. Step 6: Final answer
    x = 129.30

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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.