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Finding the Fourth Proportional to 135.43, 203.88 and 124.27

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Solution

The fourth proportional to 135.43, 203.88 and 124.27 is: 187.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    135.43 : 203.88 = 124.27 : x
  2. Step 2: Convert to fraction form
    135.43/203.88 = 124.27/x
  3. Step 3: Cross multiply
    135.43x = 203.88 × 124.27
  4. Step 4: Simplify right side
    135.43x = 25,335.15
  5. Step 5: Solve for x
    x = 25,335.15/135.43
  6. Step 6: Final answer
    x = 187.08

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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.