Home / 90,744.92-135,930.10-53,190.96

Finding the Fourth Proportional to 90,744.92, 135,930.10 and 53,190.96

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Solution

The fourth proportional to 90,744.92, 135,930.10 and 53,190.96 is: 79,676.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,744.92 : 135,930.10 = 53,190.96 : x
  2. Step 2: Convert to fraction form
    90,744.92/135,930.10 = 53,190.96/x
  3. Step 3: Cross multiply
    90,744.92x = 135,930.10 × 53,190.96
  4. Step 4: Simplify right side
    90,744.92x = 7,230,252,511.90
  5. Step 5: Solve for x
    x = 7,230,252,511.90/90,744.92
  6. Step 6: Final answer
    x = 79,676.66

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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.