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Finding the Fourth Proportional to 104.85, 143.92 and 95.59

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Solution

The fourth proportional to 104.85, 143.92 and 95.59 is: 131.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.85 : 143.92 = 95.59 : x
  2. Step 2: Convert to fraction form
    104.85/143.92 = 95.59/x
  3. Step 3: Cross multiply
    104.85x = 143.92 × 95.59
  4. Step 4: Simplify right side
    104.85x = 13,756.12
  5. Step 5: Solve for x
    x = 13,756.12/104.85
  6. Step 6: Final answer
    x = 131.20

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Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.