Home / 220,959.18-331,469.37-78,762.56

Finding the Fourth Proportional to 220,959.18, 331,469.37 and 78,762.56

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Solution

The fourth proportional to 220,959.18, 331,469.37 and 78,762.56 is: 118,154.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,959.18 : 331,469.37 = 78,762.56 : x
  2. Step 2: Convert to fraction form
    220,959.18/331,469.37 = 78,762.56/x
  3. Step 3: Cross multiply
    220,959.18x = 331,469.37 × 78,762.56
  4. Step 4: Simplify right side
    220,959.18x = 26,107,374,485.44
  5. Step 5: Solve for x
    x = 26,107,374,485.44/220,959.18
  6. Step 6: Final answer
    x = 118,154.74

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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.