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Finding the Fourth Proportional to 100,608.92, 150,771.91 and 79,456.08

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Solution

The fourth proportional to 100,608.92, 150,771.91 and 79,456.08 is: 119,072.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,608.92 : 150,771.91 = 79,456.08 : x
  2. Step 2: Convert to fraction form
    100,608.92/150,771.91 = 79,456.08/x
  3. Step 3: Cross multiply
    100,608.92x = 150,771.91 × 79,456.08
  4. Step 4: Simplify right side
    100,608.92x = 11,979,744,942.71
  5. Step 5: Solve for x
    x = 11,979,744,942.71/100,608.92
  6. Step 6: Final answer
    x = 119,072.39

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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.