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Finding the Fourth Proportional to 198,127.20, 297,190.80 and 119,200.80

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Solution

The fourth proportional to 198,127.20, 297,190.80 and 119,200.80 is: 178,801.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,127.20 : 297,190.80 = 119,200.80 : x
  2. Step 2: Convert to fraction form
    198,127.20/297,190.80 = 119,200.80/x
  3. Step 3: Cross multiply
    198,127.20x = 297,190.80 × 119,200.80
  4. Step 4: Simplify right side
    198,127.20x = 35,425,381,112.64
  5. Step 5: Solve for x
    x = 35,425,381,112.64/198,127.20
  6. Step 6: Final answer
    x = 178,801.20

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1.5x scale

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.