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Finding the Fourth Proportional to 116.17, 173.93 and 87.29

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Solution

The fourth proportional to 116.17, 173.93 and 87.29 is: 130.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.17 : 173.93 = 87.29 : x
  2. Step 2: Convert to fraction form
    116.17/173.93 = 87.29/x
  3. Step 3: Cross multiply
    116.17x = 173.93 × 87.29
  4. Step 4: Simplify right side
    116.17x = 15,181.70
  5. Step 5: Solve for x
    x = 15,181.70/116.17
  6. Step 6: Final answer
    x = 130.69

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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.