Home / 219,829.20-329,853.15-86,713.80

Finding the Fourth Proportional to 219,829.20, 329,853.15 and 86,713.80

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Solution

The fourth proportional to 219,829.20, 329,853.15 and 86,713.80 is: 130,113.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    219,829.20 : 329,853.15 = 86,713.80 : x
  2. Step 2: Convert to fraction form
    219,829.20/329,853.15 = 86,713.80/x
  3. Step 3: Cross multiply
    219,829.20x = 329,853.15 × 86,713.80
  4. Step 4: Simplify right side
    219,829.20x = 28,602,820,078.47
  5. Step 5: Solve for x
    x = 28,602,820,078.47/219,829.20
  6. Step 6: Final answer
    x = 130,113.83

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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.