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Finding the Fourth Proportional to 125.69, 187.17 and 122.49

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Solution

The fourth proportional to 125.69, 187.17 and 122.49 is: 182.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    125.69 : 187.17 = 122.49 : x
  2. Step 2: Convert to fraction form
    125.69/187.17 = 122.49/x
  3. Step 3: Cross multiply
    125.69x = 187.17 × 122.49
  4. Step 4: Simplify right side
    125.69x = 22,926.45
  5. Step 5: Solve for x
    x = 22,926.45/125.69
  6. Step 6: Final answer
    x = 182.41

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.