Home / 279,840.60-419,637.06-80,115.48

Finding the Fourth Proportional to 279,840.60, 419,637.06 and 80,115.48

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Solution

The fourth proportional to 279,840.60, 419,637.06 and 80,115.48 is: 120,137.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,840.60 : 419,637.06 = 80,115.48 : x
  2. Step 2: Convert to fraction form
    279,840.60/419,637.06 = 80,115.48/x
  3. Step 3: Cross multiply
    279,840.60x = 419,637.06 × 80,115.48
  4. Step 4: Simplify right side
    279,840.60x = 33,619,424,487.69
  5. Step 5: Solve for x
    x = 33,619,424,487.69/279,840.60
  6. Step 6: Final answer
    x = 120,137.77

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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.