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Finding the Fourth Proportional to 116.26, 160.38 and 76.93

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Solution

The fourth proportional to 116.26, 160.38 and 76.93 is: 106.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.26 : 160.38 = 76.93 : x
  2. Step 2: Convert to fraction form
    116.26/160.38 = 76.93/x
  3. Step 3: Cross multiply
    116.26x = 160.38 × 76.93
  4. Step 4: Simplify right side
    116.26x = 12,337.63
  5. Step 5: Solve for x
    x = 12,337.63/116.26
  6. Step 6: Final answer
    x = 106.12

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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.