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Finding the Fourth Proportional to 132.49, 199.57 and 124.39

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Solution

The fourth proportional to 132.49, 199.57 and 124.39 is: 187.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    132.49 : 199.57 = 124.39 : x
  2. Step 2: Convert to fraction form
    132.49/199.57 = 124.39/x
  3. Step 3: Cross multiply
    132.49x = 199.57 × 124.39
  4. Step 4: Simplify right side
    132.49x = 24,824.51
  5. Step 5: Solve for x
    x = 24,824.51/132.49
  6. Step 6: Final answer
    x = 187.37

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.