Home / 279,954.15-419,682.55-109,136.49

Finding the Fourth Proportional to 279,954.15, 419,682.55 and 109,136.49

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Solution

The fourth proportional to 279,954.15, 419,682.55 and 109,136.49 is: 163,607.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,954.15 : 419,682.55 = 109,136.49 : x
  2. Step 2: Convert to fraction form
    279,954.15/419,682.55 = 109,136.49/x
  3. Step 3: Cross multiply
    279,954.15x = 419,682.55 × 109,136.49
  4. Step 4: Simplify right side
    279,954.15x = 45,802,680,421.25
  5. Step 5: Solve for x
    x = 45,802,680,421.25/279,954.15
  6. Step 6: Final answer
    x = 163,607.79

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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.