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Finding the Fourth Proportional to 116.09, 173.03 and 109.61

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Solution

The fourth proportional to 116.09, 173.03 and 109.61 is: 163.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.09 : 173.03 = 109.61 : x
  2. Step 2: Convert to fraction form
    116.09/173.03 = 109.61/x
  3. Step 3: Cross multiply
    116.09x = 173.03 × 109.61
  4. Step 4: Simplify right side
    116.09x = 18,965.82
  5. Step 5: Solve for x
    x = 18,965.82/116.09
  6. Step 6: Final answer
    x = 163.37

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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.