Home / 275,359.22-413,063.43-85,821.20

Finding the Fourth Proportional to 275,359.22, 413,063.43 and 85,821.20

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Solution

The fourth proportional to 275,359.22, 413,063.43 and 85,821.20 is: 128,739.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    275,359.22 : 413,063.43 = 85,821.20 : x
  2. Step 2: Convert to fraction form
    275,359.22/413,063.43 = 85,821.20/x
  3. Step 3: Cross multiply
    275,359.22x = 413,063.43 × 85,821.20
  4. Step 4: Simplify right side
    275,359.22x = 35,449,597,173.40
  5. Step 5: Solve for x
    x = 35,449,597,173.40/275,359.22
  6. Step 6: Final answer
    x = 128,739.46

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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.