Home / 220,914.50-331,169.28-86,069.55

Finding the Fourth Proportional to 220,914.50, 331,169.28 and 86,069.55

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Solution

The fourth proportional to 220,914.50, 331,169.28 and 86,069.55 is: 129,025.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,914.50 : 331,169.28 = 86,069.55 : x
  2. Step 2: Convert to fraction form
    220,914.50/331,169.28 = 86,069.55/x
  3. Step 3: Cross multiply
    220,914.50x = 331,169.28 × 86,069.55
  4. Step 4: Simplify right side
    220,914.50x = 28,503,588,817.23
  5. Step 5: Solve for x
    x = 28,503,588,817.23/220,914.50
  6. Step 6: Final answer
    x = 129,025.44

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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.