Home / 131,440.80-197,161.20-100,336.80

Finding the Fourth Proportional to 131,440.80, 197,161.20 and 100,336.80

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Solution

The fourth proportional to 131,440.80, 197,161.20 and 100,336.80 is: 150,505.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,440.80 : 197,161.20 = 100,336.80 : x
  2. Step 2: Convert to fraction form
    131,440.80/197,161.20 = 100,336.80/x
  3. Step 3: Cross multiply
    131,440.80x = 197,161.20 × 100,336.80
  4. Step 4: Simplify right side
    131,440.80x = 19,782,523,892.16
  5. Step 5: Solve for x
    x = 19,782,523,892.16/131,440.80
  6. Step 6: Final answer
    x = 150,505.20

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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.