Home / 131,439.40-197,450.70-127,940.20

Finding the Fourth Proportional to 131,439.40, 197,450.70 and 127,940.20

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Solution

The fourth proportional to 131,439.40, 197,450.70 and 127,940.20 is: 192,194.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,439.40 : 197,450.70 = 127,940.20 : x
  2. Step 2: Convert to fraction form
    131,439.40/197,450.70 = 127,940.20/x
  3. Step 3: Cross multiply
    131,439.40x = 197,450.70 × 127,940.20
  4. Step 4: Simplify right side
    131,439.40x = 25,261,882,048.14
  5. Step 5: Solve for x
    x = 25,261,882,048.14/131,439.40
  6. Step 6: Final answer
    x = 192,194.14

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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.