Home / 135,872.32-203,739.10-79,821.92

Finding the Fourth Proportional to 135,872.32, 203,739.10 and 79,821.92

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Solution

The fourth proportional to 135,872.32, 203,739.10 and 79,821.92 is: 119,692.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,872.32 : 203,739.10 = 79,821.92 : x
  2. Step 2: Convert to fraction form
    135,872.32/203,739.10 = 79,821.92/x
  3. Step 3: Cross multiply
    135,872.32x = 203,739.10 × 79,821.92
  4. Step 4: Simplify right side
    135,872.32x = 16,262,846,141.07
  5. Step 5: Solve for x
    x = 16,262,846,141.07/135,872.32
  6. Step 6: Final answer
    x = 119,692.12

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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.