Home / 123,571.20-185,357.77-80,912.58

Finding the Fourth Proportional to 123,571.20, 185,357.77 and 80,912.58

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Solution

The fourth proportional to 123,571.20, 185,357.77 and 80,912.58 is: 121,369.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,571.20 : 185,357.77 = 80,912.58 : x
  2. Step 2: Convert to fraction form
    123,571.20/185,357.77 = 80,912.58/x
  3. Step 3: Cross multiply
    123,571.20x = 185,357.77 × 80,912.58
  4. Step 4: Simplify right side
    123,571.20x = 14,997,775,596.03
  5. Step 5: Solve for x
    x = 14,997,775,596.03/123,571.20
  6. Step 6: Final answer
    x = 121,369.51

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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.