Home / 109,431.20-164,049.60-65,010.80

Finding the Fourth Proportional to 109,431.20, 164,049.60 and 65,010.80

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Solution

The fourth proportional to 109,431.20, 164,049.60 and 65,010.80 is: 97,458.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,431.20 : 164,049.60 = 65,010.80 : x
  2. Step 2: Convert to fraction form
    109,431.20/164,049.60 = 65,010.80/x
  3. Step 3: Cross multiply
    109,431.20x = 164,049.60 × 65,010.80
  4. Step 4: Simplify right side
    109,431.20x = 10,664,995,735.68
  5. Step 5: Solve for x
    x = 10,664,995,735.68/109,431.20
  6. Step 6: Final answer
    x = 97,458.46

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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.