Home / 208,015,455.90-312,023,183.85-100,520,031.90

Finding the Fourth Proportional to 208,015,455.90, 312,023,183.85 and 100,520,031.90

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Solution

The fourth proportional to 208,015,455.90, 312,023,183.85 and 100,520,031.90 is: 150,780,047.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,015,455.90 : 312,023,183.85 = 100,520,031.90 : x
  2. Step 2: Convert to fraction form
    208,015,455.90/312,023,183.85 = 100,520,031.90/x
  3. Step 3: Cross multiply
    208,015,455.90x = 312,023,183.85 × 100,520,031.90
  4. Step 4: Simplify right side
    208,015,455.90x = 31,364,580,394,141,568
  5. Step 5: Solve for x
    x = 31,364,580,394,141,568/208,015,455.90
  6. Step 6: Final answer
    x = 150,780,047.85

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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.