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Finding the Fourth Proportional to 116.17, 160.36 and 74.17

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Solution

The fourth proportional to 116.17, 160.36 and 74.17 is: 102.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.17 : 160.36 = 74.17 : x
  2. Step 2: Convert to fraction form
    116.17/160.36 = 74.17/x
  3. Step 3: Cross multiply
    116.17x = 160.36 × 74.17
  4. Step 4: Simplify right side
    116.17x = 11,893.90
  5. Step 5: Solve for x
    x = 11,893.90/116.17
  6. Step 6: Final answer
    x = 102.38

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.