Home / 279,190.12-418,745.64-89,625.53

Finding the Fourth Proportional to 279,190.12, 418,745.64 and 89,625.53

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Solution

The fourth proportional to 279,190.12, 418,745.64 and 89,625.53 is: 134,425.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,190.12 : 418,745.64 = 89,625.53 : x
  2. Step 2: Convert to fraction form
    279,190.12/418,745.64 = 89,625.53/x
  3. Step 3: Cross multiply
    279,190.12x = 418,745.64 × 89,625.53
  4. Step 4: Simplify right side
    279,190.12x = 37,530,299,920.19
  5. Step 5: Solve for x
    x = 37,530,299,920.19/279,190.12
  6. Step 6: Final answer
    x = 134,425.60

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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.