Home / 221,078.22-331,687.44-78,920.37

Finding the Fourth Proportional to 221,078.22, 331,687.44 and 78,920.37

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Solution

The fourth proportional to 221,078.22, 331,687.44 and 78,920.37 is: 118,405.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,078.22 : 331,687.44 = 78,920.37 : x
  2. Step 2: Convert to fraction form
    221,078.22/331,687.44 = 78,920.37/x
  3. Step 3: Cross multiply
    221,078.22x = 331,687.44 × 78,920.37
  4. Step 4: Simplify right side
    221,078.22x = 26,176,895,489.15
  5. Step 5: Solve for x
    x = 26,176,895,489.15/221,078.22
  6. Step 6: Final answer
    x = 118,405.58

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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.