Home / 109,747.20-164,620.80-107,997.60

Finding the Fourth Proportional to 109,747.20, 164,620.80 and 107,997.60

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Solution

The fourth proportional to 109,747.20, 164,620.80 and 107,997.60 is: 161,996.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,747.20 : 164,620.80 = 107,997.60 : x
  2. Step 2: Convert to fraction form
    109,747.20/164,620.80 = 107,997.60/x
  3. Step 3: Cross multiply
    109,747.20x = 164,620.80 × 107,997.60
  4. Step 4: Simplify right side
    109,747.20x = 17,778,651,310.08
  5. Step 5: Solve for x
    x = 17,778,651,310.08/109,747.20
  6. Step 6: Final answer
    x = 161,996.40

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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.