Home / 129,722.20-194,729.10-100,270.60

Finding the Fourth Proportional to 129,722.20, 194,729.10 and 100,270.60

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Solution

The fourth proportional to 129,722.20, 194,729.10 and 100,270.60 is: 150,518.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,722.20 : 194,729.10 = 100,270.60 : x
  2. Step 2: Convert to fraction form
    129,722.20/194,729.10 = 100,270.60/x
  3. Step 3: Cross multiply
    129,722.20x = 194,729.10 × 100,270.60
  4. Step 4: Simplify right side
    129,722.20x = 19,525,603,694.46
  5. Step 5: Solve for x
    x = 19,525,603,694.46/129,722.20
  6. Step 6: Final answer
    x = 150,518.60

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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.