Home / 99,815,986.60-149,723,979.90-85,203,327.40

Finding the Fourth Proportional to 99,815,986.60, 149,723,979.90 and 85,203,327.40

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Solution

The fourth proportional to 99,815,986.60, 149,723,979.90 and 85,203,327.40 is: 127,804,991.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,815,986.60 : 149,723,979.90 = 85,203,327.40 : x
  2. Step 2: Convert to fraction form
    99,815,986.60/149,723,979.90 = 85,203,327.40/x
  3. Step 3: Cross multiply
    99,815,986.60x = 149,723,979.90 × 85,203,327.40
  4. Step 4: Simplify right side
    99,815,986.60x = 12,756,981,279,050,720
  5. Step 5: Solve for x
    x = 12,756,981,279,050,720/99,815,986.60
  6. Step 6: Final answer
    x = 127,804,991.10

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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.