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Finding the Fourth Proportional to 109.04, 163.24 and 93.66

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Solution

The fourth proportional to 109.04, 163.24 and 93.66 is: 140.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.04 : 163.24 = 93.66 : x
  2. Step 2: Convert to fraction form
    109.04/163.24 = 93.66/x
  3. Step 3: Cross multiply
    109.04x = 163.24 × 93.66
  4. Step 4: Simplify right side
    109.04x = 15,288.21
  5. Step 5: Solve for x
    x = 15,288.21/109.04
  6. Step 6: Final answer
    x = 140.21

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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.