Home / 219,914.12-329,649.24-86,720.96

Finding the Fourth Proportional to 219,914.12, 329,649.24 and 86,720.96

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Solution

The fourth proportional to 219,914.12, 329,649.24 and 86,720.96 is: 129,993.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,914.12 : 329,649.24 = 86,720.96 : x
  2. Step 2: Convert to fraction form
    219,914.12/329,649.24 = 86,720.96/x
  3. Step 3: Cross multiply
    219,914.12x = 329,649.24 × 86,720.96
  4. Step 4: Simplify right side
    219,914.12x = 28,587,498,556.07
  5. Step 5: Solve for x
    x = 28,587,498,556.07/219,914.12
  6. Step 6: Final answer
    x = 129,993.92

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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.