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Finding the Fourth Proportional to 127,229.20, 190,843.80 and 57,245.20

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Solution

The fourth proportional to 127,229.20, 190,843.80 and 57,245.20 is: 85,867.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,229.20 : 190,843.80 = 57,245.20 : x
  2. Step 2: Convert to fraction form
    127,229.20/190,843.80 = 57,245.20/x
  3. Step 3: Cross multiply
    127,229.20x = 190,843.80 × 57,245.20
  4. Step 4: Simplify right side
    127,229.20x = 10,924,891,499.76
  5. Step 5: Solve for x
    x = 10,924,891,499.76/127,229.20
  6. Step 6: Final answer
    x = 85,867.80

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