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Finding the Fourth Proportional to 104.45, 156.41 and 93.43

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Solution

The fourth proportional to 104.45, 156.41 and 93.43 is: 139.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    104.45 : 156.41 = 93.43 : x
  2. Step 2: Convert to fraction form
    104.45/156.41 = 93.43/x
  3. Step 3: Cross multiply
    104.45x = 156.41 × 93.43
  4. Step 4: Simplify right side
    104.45x = 14,612.14
  5. Step 5: Solve for x
    x = 14,612.14/104.45
  6. Step 6: Final answer
    x = 139.90

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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.