Home / 99,647,932.80-149,471,899.20-85,777,322.70

Finding the Fourth Proportional to 99,647,932.80, 149,471,899.20 and 85,777,322.70

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Solution

The fourth proportional to 99,647,932.80, 149,471,899.20 and 85,777,322.70 is: 128,665,984.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,647,932.80 : 149,471,899.20 = 85,777,322.70 : x
  2. Step 2: Convert to fraction form
    99,647,932.80/149,471,899.20 = 85,777,322.70/x
  3. Step 3: Cross multiply
    99,647,932.80x = 149,471,899.20 × 85,777,322.70
  4. Step 4: Simplify right side
    99,647,932.80x = 12,821,299,332,260,272
  5. Step 5: Solve for x
    x = 12,821,299,332,260,272/99,647,932.80
  6. Step 6: Final answer
    x = 128,665,984.05

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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.