Home / 111,105.20-167,046.60-108,772.40

Finding the Fourth Proportional to 111,105.20, 167,046.60 and 108,772.40

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Solution

The fourth proportional to 111,105.20, 167,046.60 and 108,772.40 is: 163,539.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,105.20 : 167,046.60 = 108,772.40 : x
  2. Step 2: Convert to fraction form
    111,105.20/167,046.60 = 108,772.40/x
  3. Step 3: Cross multiply
    111,105.20x = 167,046.60 × 108,772.40
  4. Step 4: Simplify right side
    111,105.20x = 18,170,059,593.84
  5. Step 5: Solve for x
    x = 18,170,059,593.84/111,105.20
  6. Step 6: Final answer
    x = 163,539.24

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.