Home / 122.20-183.18-68.14

Finding the Fourth Proportional to 122.20, 183.18 and 68.14

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Solution

The fourth proportional to 122.20, 183.18 and 68.14 is: 102.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.20 : 183.18 = 68.14 : x
  2. Step 2: Convert to fraction form
    122.20/183.18 = 68.14/x
  3. Step 3: Cross multiply
    122.20x = 183.18 × 68.14
  4. Step 4: Simplify right side
    122.20x = 12,481.89
  5. Step 5: Solve for x
    x = 12,481.89/122.20
  6. Step 6: Final answer
    x = 102.14

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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.