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Finding the Fourth Proportional to 116.37, 160.38 and 91.80

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Solution

The fourth proportional to 116.37, 160.38 and 91.80 is: 126.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.37 : 160.38 = 91.80 : x
  2. Step 2: Convert to fraction form
    116.37/160.38 = 91.80/x
  3. Step 3: Cross multiply
    116.37x = 160.38 × 91.80
  4. Step 4: Simplify right side
    116.37x = 14,722.88
  5. Step 5: Solve for x
    x = 14,722.88/116.37
  6. Step 6: Final answer
    x = 126.52

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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.