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Finding the Fourth Proportional to 132.81, 183.70 and 124.08

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Solution

The fourth proportional to 132.81, 183.70 and 124.08 is: 171.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.81 : 183.70 = 124.08 : x
  2. Step 2: Convert to fraction form
    132.81/183.70 = 124.08/x
  3. Step 3: Cross multiply
    132.81x = 183.70 × 124.08
  4. Step 4: Simplify right side
    132.81x = 22,793.50
  5. Step 5: Solve for x
    x = 22,793.50/132.81
  6. Step 6: Final answer
    x = 171.62

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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.