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Finding the Fourth Proportional to 125.36, 189.05 and 124.55

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Solution

The fourth proportional to 125.36, 189.05 and 124.55 is: 187.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.36 : 189.05 = 124.55 : x
  2. Step 2: Convert to fraction form
    125.36/189.05 = 124.55/x
  3. Step 3: Cross multiply
    125.36x = 189.05 × 124.55
  4. Step 4: Simplify right side
    125.36x = 23,546.96
  5. Step 5: Solve for x
    x = 23,546.96/125.36
  6. Step 6: Final answer
    x = 187.83

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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.