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Finding the Fourth Proportional to 116.46, 160.73 and 66.68

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Solution

The fourth proportional to 116.46, 160.73 and 66.68 is: 92.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.46 : 160.73 = 66.68 : x
  2. Step 2: Convert to fraction form
    116.46/160.73 = 66.68/x
  3. Step 3: Cross multiply
    116.46x = 160.73 × 66.68
  4. Step 4: Simplify right side
    116.46x = 10,717.48
  5. Step 5: Solve for x
    x = 10,717.48/116.46
  6. Step 6: Final answer
    x = 92.03

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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.