Home / 99,647,934.30-149,471,901.45-85,777,324.20

Finding the Fourth Proportional to 99,647,934.30, 149,471,901.45 and 85,777,324.20

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Solution

The fourth proportional to 99,647,934.30, 149,471,901.45 and 85,777,324.20 is: 128,665,986.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,647,934.30 : 149,471,901.45 = 85,777,324.20 : x
  2. Step 2: Convert to fraction form
    99,647,934.30/149,471,901.45 = 85,777,324.20/x
  3. Step 3: Cross multiply
    99,647,934.30x = 149,471,901.45 × 85,777,324.20
  4. Step 4: Simplify right side
    99,647,934.30x = 12,821,299,749,467,100
  5. Step 5: Solve for x
    x = 12,821,299,749,467,100/99,647,934.30
  6. Step 6: Final answer
    x = 128,665,986.30

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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.