Home / 87,983.60-131,975.40-82,914.80

Finding the Fourth Proportional to 87,983.60, 131,975.40 and 82,914.80

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Solution

The fourth proportional to 87,983.60, 131,975.40 and 82,914.80 is: 124,372.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,983.60 : 131,975.40 = 82,914.80 : x
  2. Step 2: Convert to fraction form
    87,983.60/131,975.40 = 82,914.80/x
  3. Step 3: Cross multiply
    87,983.60x = 131,975.40 × 82,914.80
  4. Step 4: Simplify right side
    87,983.60x = 10,942,713,895.92
  5. Step 5: Solve for x
    x = 10,942,713,895.92/87,983.60
  6. Step 6: Final answer
    x = 124,372.20

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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.