Home / 221,229.30-331,973.55-81,002.10

Finding the Fourth Proportional to 221,229.30, 331,973.55 and 81,002.10

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Solution

The fourth proportional to 221,229.30, 331,973.55 and 81,002.10 is: 121,550.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,229.30 : 331,973.55 = 81,002.10 : x
  2. Step 2: Convert to fraction form
    221,229.30/331,973.55 = 81,002.10/x
  3. Step 3: Cross multiply
    221,229.30x = 331,973.55 × 81,002.10
  4. Step 4: Simplify right side
    221,229.30x = 26,890,554,694.46
  5. Step 5: Solve for x
    x = 26,890,554,694.46/221,229.30
  6. Step 6: Final answer
    x = 121,550.60

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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.