Home / 87,451,770.40-130,879,057.20-80,285,408.80

Finding the Fourth Proportional to 87,451,770.40, 130,879,057.20 and 80,285,408.80

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Solution

The fourth proportional to 87,451,770.40, 130,879,057.20 and 80,285,408.80 is: 120,153,983.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,451,770.40 : 130,879,057.20 = 80,285,408.80 : x
  2. Step 2: Convert to fraction form
    87,451,770.40/130,879,057.20 = 80,285,408.80/x
  3. Step 3: Cross multiply
    87,451,770.40x = 130,879,057.20 × 80,285,408.80
  4. Step 4: Simplify right side
    87,451,770.40x = 10,507,678,610,660,584
  5. Step 5: Solve for x
    x = 10,507,678,610,660,584/87,451,770.40
  6. Step 6: Final answer
    x = 120,153,983.88

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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.