Home / 198,145,390.60-297,218,085.90-120,661,292.80

Finding the Fourth Proportional to 198,145,390.60, 297,218,085.90 and 120,661,292.80

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Solution

The fourth proportional to 198,145,390.60, 297,218,085.90 and 120,661,292.80 is: 180,991,939.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    198,145,390.60 : 297,218,085.90 = 120,661,292.80 : x
  2. Step 2: Convert to fraction form
    198,145,390.60/297,218,085.90 = 120,661,292.80/x
  3. Step 3: Cross multiply
    198,145,390.60x = 297,218,085.90 × 120,661,292.80
  4. Step 4: Simplify right side
    198,145,390.60x = 35,862,718,488,235,448
  5. Step 5: Solve for x
    x = 35,862,718,488,235,448/198,145,390.60
  6. Step 6: Final answer
    x = 180,991,939.20

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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.