Home / 207,418.07-311,172.46-67,190.87

Finding the Fourth Proportional to 207,418.07, 311,172.46 and 67,190.87

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Solution

The fourth proportional to 207,418.07, 311,172.46 and 67,190.87 is: 100,800.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,418.07 : 311,172.46 = 67,190.87 : x
  2. Step 2: Convert to fraction form
    207,418.07/311,172.46 = 67,190.87/x
  3. Step 3: Cross multiply
    207,418.07x = 311,172.46 × 67,190.87
  4. Step 4: Simplify right side
    207,418.07x = 20,907,946,583.60
  5. Step 5: Solve for x
    x = 20,907,946,583.60/207,418.07
  6. Step 6: Final answer
    x = 100,800.99

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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.