Home / 99,815,906.10-149,723,859.15-85,203,246.90

Finding the Fourth Proportional to 99,815,906.10, 149,723,859.15 and 85,203,246.90

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Solution

The fourth proportional to 99,815,906.10, 149,723,859.15 and 85,203,246.90 is: 127,804,870.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,815,906.10 : 149,723,859.15 = 85,203,246.90 : x
  2. Step 2: Convert to fraction form
    99,815,906.10/149,723,859.15 = 85,203,246.90/x
  3. Step 3: Cross multiply
    99,815,906.10x = 149,723,859.15 × 85,203,246.90
  4. Step 4: Simplify right side
    99,815,906.10x = 12,756,958,937,978,276
  5. Step 5: Solve for x
    x = 12,756,958,937,978,276/99,815,906.10
  6. Step 6: Final answer
    x = 127,804,870.35

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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.