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Finding the Fourth Proportional to 124.45, 185.36 and 122.85

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Solution

The fourth proportional to 124.45, 185.36 and 122.85 is: 182.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    124.45 : 185.36 = 122.85 : x
  2. Step 2: Convert to fraction form
    124.45/185.36 = 122.85/x
  3. Step 3: Cross multiply
    124.45x = 185.36 × 122.85
  4. Step 4: Simplify right side
    124.45x = 22,770.86
  5. Step 5: Solve for x
    x = 22,770.86/124.45
  6. Step 6: Final answer
    x = 182.98

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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.