Home / 139,270.49-192,194.07-81,912.23

Finding the Fourth Proportional to 139,270.49, 192,194.07 and 81,912.23

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Solution

The fourth proportional to 139,270.49, 192,194.07 and 81,912.23 is: 113,039.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    139,270.49 : 192,194.07 = 81,912.23 : x
  2. Step 2: Convert to fraction form
    139,270.49/192,194.07 = 81,912.23/x
  3. Step 3: Cross multiply
    139,270.49x = 192,194.07 × 81,912.23
  4. Step 4: Simplify right side
    139,270.49x = 15,743,044,456.92
  5. Step 5: Solve for x
    x = 15,743,044,456.92/139,270.49
  6. Step 6: Final answer
    x = 113,039.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.