Home / 87,149,204.20-130,723,806.30-80,580,039.40

Finding the Fourth Proportional to 87,149,204.20, 130,723,806.30 and 80,580,039.40

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Solution

The fourth proportional to 87,149,204.20, 130,723,806.30 and 80,580,039.40 is: 120,870,059.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,149,204.20 : 130,723,806.30 = 80,580,039.40 : x
  2. Step 2: Convert to fraction form
    87,149,204.20/130,723,806.30 = 80,580,039.40/x
  3. Step 3: Cross multiply
    87,149,204.20x = 130,723,806.30 × 80,580,039.40
  4. Step 4: Simplify right side
    87,149,204.20x = 10,533,729,462,171,968
  5. Step 5: Solve for x
    x = 10,533,729,462,171,968/87,149,204.20
  6. Step 6: Final answer
    x = 120,870,059.10

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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.