Home / 198,934.11-298,401.98-80,607.69

Finding the Fourth Proportional to 198,934.11, 298,401.98 and 80,607.69

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Solution

The fourth proportional to 198,934.11, 298,401.98 and 80,607.69 is: 120,911.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,934.11 : 298,401.98 = 80,607.69 : x
  2. Step 2: Convert to fraction form
    198,934.11/298,401.98 = 80,607.69/x
  3. Step 3: Cross multiply
    198,934.11x = 298,401.98 × 80,607.69
  4. Step 4: Simplify right side
    198,934.11x = 24,053,493,896.19
  5. Step 5: Solve for x
    x = 24,053,493,896.19/198,934.11
  6. Step 6: Final answer
    x = 120,911.86

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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.