Home / 80,454,911.65-120,682,367.48-72,392,754.85

Finding the Fourth Proportional to 80,454,911.65, 120,682,367.48 and 72,392,754.85

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Solution

The fourth proportional to 80,454,911.65, 120,682,367.48 and 72,392,754.85 is: 108,589,132.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,454,911.65 : 120,682,367.48 = 72,392,754.85 : x
  2. Step 2: Convert to fraction form
    80,454,911.65/120,682,367.48 = 72,392,754.85/x
  3. Step 3: Cross multiply
    80,454,911.65x = 120,682,367.48 × 72,392,754.85
  4. Step 4: Simplify right side
    80,454,911.65x = 8,736,529,043,697,252
  5. Step 5: Solve for x
    x = 8,736,529,043,697,252/80,454,911.65
  6. Step 6: Final answer
    x = 108,589,132.28

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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.