Home / 279,845.96-419,645.40-80,121.02

Finding the Fourth Proportional to 279,845.96, 419,645.40 and 80,121.02

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Solution

The fourth proportional to 279,845.96, 419,645.40 and 80,121.02 is: 120,146.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,845.96 : 419,645.40 = 80,121.02 : x
  2. Step 2: Convert to fraction form
    279,845.96/419,645.40 = 80,121.02/x
  3. Step 3: Cross multiply
    279,845.96x = 419,645.40 × 80,121.02
  4. Step 4: Simplify right side
    279,845.96x = 33,622,417,486.31
  5. Step 5: Solve for x
    x = 33,622,417,486.31/279,845.96
  6. Step 6: Final answer
    x = 120,146.16

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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.