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Finding the Fourth Proportional to 122.76, 184.01 and 104.67

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Solution

The fourth proportional to 122.76, 184.01 and 104.67 is: 156.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    122.76 : 184.01 = 104.67 : x
  2. Step 2: Convert to fraction form
    122.76/184.01 = 104.67/x
  3. Step 3: Cross multiply
    122.76x = 184.01 × 104.67
  4. Step 4: Simplify right side
    122.76x = 19,259.80
  5. Step 5: Solve for x
    x = 19,259.80/122.76
  6. Step 6: Final answer
    x = 156.89

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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.