Home / 142,738,520.76-196,988,905.13-80,859,367.80

Finding the Fourth Proportional to 142,738,520.76, 196,988,905.13 and 80,859,367.80

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Solution

The fourth proportional to 142,738,520.76, 196,988,905.13 and 80,859,367.80 is: 111,591,448.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,738,520.76 : 196,988,905.13 = 80,859,367.80 : x
  2. Step 2: Convert to fraction form
    142,738,520.76/196,988,905.13 = 80,859,367.80/x
  3. Step 3: Cross multiply
    142,738,520.76x = 196,988,905.13 × 80,859,367.80
  4. Step 4: Simplify right side
    142,738,520.76x = 15,928,398,332,021,680
  5. Step 5: Solve for x
    x = 15,928,398,332,021,680/142,738,520.76
  6. Step 6: Final answer
    x = 111,591,448.81

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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.