Home / 80,647,839.50-120,880,210.41-70,913,611.85

Finding the Fourth Proportional to 80,647,839.50, 120,880,210.41 and 70,913,611.85

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Solution

The fourth proportional to 80,647,839.50, 120,880,210.41 and 70,913,611.85 is: 106,289,918.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,647,839.50 : 120,880,210.41 = 70,913,611.85 : x
  2. Step 2: Convert to fraction form
    80,647,839.50/120,880,210.41 = 70,913,611.85/x
  3. Step 3: Cross multiply
    80,647,839.50x = 120,880,210.41 × 70,913,611.85
  4. Step 4: Simplify right side
    80,647,839.50x = 8,572,052,320,756,668
  5. Step 5: Solve for x
    x = 8,572,052,320,756,668/80,647,839.50
  6. Step 6: Final answer
    x = 106,289,918.92

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1.5x scale

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.