Home / 142,690,102.20-196,914,920.94-80,823,243.96

Finding the Fourth Proportional to 142,690,102.20, 196,914,920.94 and 80,823,243.96

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Solution

The fourth proportional to 142,690,102.20, 196,914,920.94 and 80,823,243.96 is: 111,537,537.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    142,690,102.20 : 196,914,920.94 = 80,823,243.96 : x
  2. Step 2: Convert to fraction form
    142,690,102.20/196,914,920.94 = 80,823,243.96/x
  3. Step 3: Cross multiply
    142,690,102.20x = 196,914,920.94 × 80,823,243.96
  4. Step 4: Simplify right side
    142,690,102.20x = 15,915,302,694,497,732
  5. Step 5: Solve for x
    x = 15,915,302,694,497,732/142,690,102.20
  6. Step 6: Final answer
    x = 111,537,537.99

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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.