Home / 87,736.80-131,605.20-73,221.60

Finding the Fourth Proportional to 87,736.80, 131,605.20 and 73,221.60

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Solution

The fourth proportional to 87,736.80, 131,605.20 and 73,221.60 is: 109,832.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    87,736.80 : 131,605.20 = 73,221.60 : x
  2. Step 2: Convert to fraction form
    87,736.80/131,605.20 = 73,221.60/x
  3. Step 3: Cross multiply
    87,736.80x = 131,605.20 × 73,221.60
  4. Step 4: Simplify right side
    87,736.80x = 9,636,343,312.32
  5. Step 5: Solve for x
    x = 9,636,343,312.32/87,736.80
  6. Step 6: Final answer
    x = 109,832.40

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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.