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Finding the Fourth Proportional to 104.60, 156.04 and 92.60

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Solution

The fourth proportional to 104.60, 156.04 and 92.60 is: 138.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.60 : 156.04 = 92.60 : x
  2. Step 2: Convert to fraction form
    104.60/156.04 = 92.60/x
  3. Step 3: Cross multiply
    104.60x = 156.04 × 92.60
  4. Step 4: Simplify right side
    104.60x = 14,449.30
  5. Step 5: Solve for x
    x = 14,449.30/104.60
  6. Step 6: Final answer
    x = 138.14

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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.