Home / 10,205,002.20-15,286,508.10-5,159,155.80

Finding the Fourth Proportional to 10,205,002.20, 15,286,508.10 and 5,159,155.80

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Solution

The fourth proportional to 10,205,002.20, 15,286,508.10 and 5,159,155.80 is: 7,728,119.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,205,002.20 : 15,286,508.10 = 5,159,155.80 : x
  2. Step 2: Convert to fraction form
    10,205,002.20/15,286,508.10 = 5,159,155.80/x
  3. Step 3: Cross multiply
    10,205,002.20x = 15,286,508.10 × 5,159,155.80
  4. Step 4: Simplify right side
    10,205,002.20x = 78,865,476,925,861.97
  5. Step 5: Solve for x
    x = 78,865,476,925,861.97/10,205,002.20
  6. Step 6: Final answer
    x = 7,728,119.54

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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.