Home / 199,314,458.10-298,971,687.15-78,145,910.10

Finding the Fourth Proportional to 199,314,458.10, 298,971,687.15 and 78,145,910.10

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Solution

The fourth proportional to 199,314,458.10, 298,971,687.15 and 78,145,910.10 is: 117,218,865.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,314,458.10 : 298,971,687.15 = 78,145,910.10 : x
  2. Step 2: Convert to fraction form
    199,314,458.10/298,971,687.15 = 78,145,910.10/x
  3. Step 3: Cross multiply
    199,314,458.10x = 298,971,687.15 × 78,145,910.10
  4. Step 4: Simplify right side
    199,314,458.10x = 23,363,414,586,469,220
  5. Step 5: Solve for x
    x = 23,363,414,586,469,220/199,314,458.10
  6. Step 6: Final answer
    x = 117,218,865.15

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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.