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Finding the Fourth Proportional to 144,161.87, 198,942.59 and 79,635.55

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Solution

The fourth proportional to 144,161.87, 198,942.59 and 79,635.55 is: 109,896.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,161.87 : 198,942.59 = 79,635.55 : x
  2. Step 2: Convert to fraction form
    144,161.87/198,942.59 = 79,635.55/x
  3. Step 3: Cross multiply
    144,161.87x = 198,942.59 × 79,635.55
  4. Step 4: Simplify right side
    144,161.87x = 15,842,902,053.23
  5. Step 5: Solve for x
    x = 15,842,902,053.23/144,161.87
  6. Step 6: Final answer
    x = 109,896.62

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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.