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Finding the Fourth Proportional to 116.86, 161.32 and 73.26

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Solution

The fourth proportional to 116.86, 161.32 and 73.26 is: 101.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    116.86 : 161.32 = 73.26 : x
  2. Step 2: Convert to fraction form
    116.86/161.32 = 73.26/x
  3. Step 3: Cross multiply
    116.86x = 161.32 × 73.26
  4. Step 4: Simplify right side
    116.86x = 11,818.30
  5. Step 5: Solve for x
    x = 11,818.30/116.86
  6. Step 6: Final answer
    x = 101.13

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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.