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Finding the Fourth Proportional to 131,496.80, 197,245.20 and 100,392.80

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Solution

The fourth proportional to 131,496.80, 197,245.20 and 100,392.80 is: 150,589.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,496.80 : 197,245.20 = 100,392.80 : x
  2. Step 2: Convert to fraction form
    131,496.80/197,245.20 = 100,392.80/x
  3. Step 3: Cross multiply
    131,496.80x = 197,245.20 × 100,392.80
  4. Step 4: Simplify right side
    131,496.80x = 19,801,997,914.56
  5. Step 5: Solve for x
    x = 19,801,997,914.56/131,496.80
  6. Step 6: Final answer
    x = 150,589.20

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1.5x scale

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.