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Finding the Fourth Proportional to 116.86, 161.41 and 92.62

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Solution

The fourth proportional to 116.86, 161.41 and 92.62 is: 127.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.86 : 161.41 = 92.62 : x
  2. Step 2: Convert to fraction form
    116.86/161.41 = 92.62/x
  3. Step 3: Cross multiply
    116.86x = 161.41 × 92.62
  4. Step 4: Simplify right side
    116.86x = 14,949.16
  5. Step 5: Solve for x
    x = 14,949.16/116.86
  6. Step 6: Final answer
    x = 127.93

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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.