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Finding the Fourth Proportional to 133,321.28, 199,618.80 and 93,819.20

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Solution

The fourth proportional to 133,321.28, 199,618.80 and 93,819.20 is: 140,473.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,321.28 : 199,618.80 = 93,819.20 : x
  2. Step 2: Convert to fraction form
    133,321.28/199,618.80 = 93,819.20/x
  3. Step 3: Cross multiply
    133,321.28x = 199,618.80 × 93,819.20
  4. Step 4: Simplify right side
    133,321.28x = 18,728,076,120.96
  5. Step 5: Solve for x
    x = 18,728,076,120.96/133,321.28
  6. Step 6: Final answer
    x = 140,473.27

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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.