Home / 221,098.20-331,717.37-78,940.36

Finding the Fourth Proportional to 221,098.20, 331,717.37 and 78,940.36

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Solution

The fourth proportional to 221,098.20, 331,717.37 and 78,940.36 is: 118,435.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    221,098.20 : 331,717.37 = 78,940.36 : x
  2. Step 2: Convert to fraction form
    221,098.20/331,717.37 = 78,940.36/x
  3. Step 3: Cross multiply
    221,098.20x = 331,717.37 × 78,940.36
  4. Step 4: Simplify right side
    221,098.20x = 26,185,888,606.05
  5. Step 5: Solve for x
    x = 26,185,888,606.05/221,098.20
  6. Step 6: Final answer
    x = 118,435.56

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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.