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Finding the Fourth Proportional to 125.22, 189.14 and 124.22

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Solution

The fourth proportional to 125.22, 189.14 and 124.22 is: 187.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.22 : 189.14 = 124.22 : x
  2. Step 2: Convert to fraction form
    125.22/189.14 = 124.22/x
  3. Step 3: Cross multiply
    125.22x = 189.14 × 124.22
  4. Step 4: Simplify right side
    125.22x = 23,494.97
  5. Step 5: Solve for x
    x = 23,494.97/125.22
  6. Step 6: Final answer
    x = 187.63

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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.