Home / 87,743,137.30-121,211,656.97-70,078,847.95

Finding the Fourth Proportional to 87,743,137.30, 121,211,656.97 and 70,078,847.95

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Solution

The fourth proportional to 87,743,137.30, 121,211,656.97 and 70,078,847.95 is: 96,809,545.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,743,137.30 : 121,211,656.97 = 70,078,847.95 : x
  2. Step 2: Convert to fraction form
    87,743,137.30/121,211,656.97 = 70,078,847.95/x
  3. Step 3: Cross multiply
    87,743,137.30x = 121,211,656.97 × 70,078,847.95
  4. Step 4: Simplify right side
    87,743,137.30x = 8,494,373,278,568,188
  5. Step 5: Solve for x
    x = 8,494,373,278,568,188/87,743,137.30
  6. Step 6: Final answer
    x = 96,809,545.91

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.