Home / 87,949.80-131,730.30-68,072.40

Finding the Fourth Proportional to 87,949.80, 131,730.30 and 68,072.40

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Solution

The fourth proportional to 87,949.80, 131,730.30 and 68,072.40 is: 101,958.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,949.80 : 131,730.30 = 68,072.40 : x
  2. Step 2: Convert to fraction form
    87,949.80/131,730.30 = 68,072.40/x
  3. Step 3: Cross multiply
    87,949.80x = 131,730.30 × 68,072.40
  4. Step 4: Simplify right side
    87,949.80x = 8,967,197,673.72
  5. Step 5: Solve for x
    x = 8,967,197,673.72/87,949.80
  6. Step 6: Final answer
    x = 101,958.14

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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.