Home / 198,288,049.80-297,432,074.70-120,689,790.60

Finding the Fourth Proportional to 198,288,049.80, 297,432,074.70 and 120,689,790.60

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Solution

The fourth proportional to 198,288,049.80, 297,432,074.70 and 120,689,790.60 is: 181,034,685.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,288,049.80 : 297,432,074.70 = 120,689,790.60 : x
  2. Step 2: Convert to fraction form
    198,288,049.80/297,432,074.70 = 120,689,790.60/x
  3. Step 3: Cross multiply
    198,288,049.80x = 297,432,074.70 × 120,689,790.60
  4. Step 4: Simplify right side
    198,288,049.80x = 35,897,014,813,266,556
  5. Step 5: Solve for x
    x = 35,897,014,813,266,556/198,288,049.80
  6. Step 6: Final answer
    x = 181,034,685.90

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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.