Home / 279,121.21-418,683.03-89,610.37

Finding the Fourth Proportional to 279,121.21, 418,683.03 and 89,610.37

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Solution

The fourth proportional to 279,121.21, 418,683.03 and 89,610.37 is: 134,415.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    279,121.21 : 418,683.03 = 89,610.37 : x
  2. Step 2: Convert to fraction form
    279,121.21/418,683.03 = 89,610.37/x
  3. Step 3: Cross multiply
    279,121.21x = 418,683.03 × 89,610.37
  4. Step 4: Simplify right side
    279,121.21x = 37,518,341,231.02
  5. Step 5: Solve for x
    x = 37,518,341,231.02/279,121.21
  6. Step 6: Final answer
    x = 134,415.95

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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.