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Finding the Fourth Proportional to 8,203,686.20, 12,305,529.30 and 8,203,686.20

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Solution

The fourth proportional to 8,203,686.20, 12,305,529.30 and 8,203,686.20 is: 12,305,529.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,203,686.20 : 12,305,529.30 = 8,203,686.20 : x
  2. Step 2: Convert to fraction form
    8,203,686.20/12,305,529.30 = 8,203,686.20/x
  3. Step 3: Cross multiply
    8,203,686.20x = 12,305,529.30 × 8,203,686.20
  4. Step 4: Simplify right side
    8,203,686.20x = 100,950,700,902,105.67
  5. Step 5: Solve for x
    x = 100,950,700,902,105.67/8,203,686.20
  6. Step 6: Final answer
    x = 12,305,529.30

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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.