Home / 198,986.40-298,042.20-119,962.80

Finding the Fourth Proportional to 198,986.40, 298,042.20 and 119,962.80

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Solution

The fourth proportional to 198,986.40, 298,042.20 and 119,962.80 is: 179,680.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,986.40 : 298,042.20 = 119,962.80 : x
  2. Step 2: Convert to fraction form
    198,986.40/298,042.20 = 119,962.80/x
  3. Step 3: Cross multiply
    198,986.40x = 298,042.20 × 119,962.80
  4. Step 4: Simplify right side
    198,986.40x = 35,753,976,830.16
  5. Step 5: Solve for x
    x = 35,753,976,830.16/198,986.40
  6. Step 6: Final answer
    x = 179,680.50

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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.