Home / 99,813,891.10-149,720,836.65-85,201,231.90

Finding the Fourth Proportional to 99,813,891.10, 149,720,836.65 and 85,201,231.90

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Solution

The fourth proportional to 99,813,891.10, 149,720,836.65 and 85,201,231.90 is: 127,801,847.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,813,891.10 : 149,720,836.65 = 85,201,231.90 : x
  2. Step 2: Convert to fraction form
    99,813,891.10/149,720,836.65 = 85,201,231.90/x
  3. Step 3: Cross multiply
    99,813,891.10x = 149,720,836.65 × 85,201,231.90
  4. Step 4: Simplify right side
    99,813,891.10x = 12,756,399,723,678,670
  5. Step 5: Solve for x
    x = 12,756,399,723,678,670/99,813,891.10
  6. Step 6: Final answer
    x = 127,801,847.85

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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.