Home / 131,996.40-198,286.20-127,039.20

Finding the Fourth Proportional to 131,996.40, 198,286.20 and 127,039.20

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Solution

The fourth proportional to 131,996.40, 198,286.20 and 127,039.20 is: 190,839.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,996.40 : 198,286.20 = 127,039.20 : x
  2. Step 2: Convert to fraction form
    131,996.40/198,286.20 = 127,039.20/x
  3. Step 3: Cross multiply
    131,996.40x = 198,286.20 × 127,039.20
  4. Step 4: Simplify right side
    131,996.40x = 25,190,120,219.04
  5. Step 5: Solve for x
    x = 25,190,120,219.04/131,996.40
  6. Step 6: Final answer
    x = 190,839.45

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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.