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Finding the Fourth Proportional to 184.12, 276.26 and 81.43

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Solution

The fourth proportional to 184.12, 276.26 and 81.43 is: 122.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    184.12 : 276.26 = 81.43 : x
  2. Step 2: Convert to fraction form
    184.12/276.26 = 81.43/x
  3. Step 3: Cross multiply
    184.12x = 276.26 × 81.43
  4. Step 4: Simplify right side
    184.12x = 22,495.85
  5. Step 5: Solve for x
    x = 22,495.85/184.12
  6. Step 6: Final answer
    x = 122.18

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.