Home / 12,128,444.20-18,192,666.30-8,071,777.90

Finding the Fourth Proportional to 12,128,444.20, 18,192,666.30 and 8,071,777.90

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Solution

The fourth proportional to 12,128,444.20, 18,192,666.30 and 8,071,777.90 is: 12,107,666.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,128,444.20 : 18,192,666.30 = 8,071,777.90 : x
  2. Step 2: Convert to fraction form
    12,128,444.20/18,192,666.30 = 8,071,777.90/x
  3. Step 3: Cross multiply
    12,128,444.20x = 18,192,666.30 × 8,071,777.90
  4. Step 4: Simplify right side
    12,128,444.20x = 146,847,161,782,414.78
  5. Step 5: Solve for x
    x = 146,847,161,782,414.78/12,128,444.20
  6. Step 6: Final answer
    x = 12,107,666.85

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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.