Home / 259,549.20-389,250.90-82,110.60

Finding the Fourth Proportional to 259,549.20, 389,250.90 and 82,110.60

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Solution

The fourth proportional to 259,549.20, 389,250.90 and 82,110.60 is: 123,142.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,549.20 : 389,250.90 = 82,110.60 : x
  2. Step 2: Convert to fraction form
    259,549.20/389,250.90 = 82,110.60/x
  3. Step 3: Cross multiply
    259,549.20x = 389,250.90 × 82,110.60
  4. Step 4: Simplify right side
    259,549.20x = 31,961,624,949.54
  5. Step 5: Solve for x
    x = 31,961,624,949.54/259,549.20
  6. Step 6: Final answer
    x = 123,142.84

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1.5x scale

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.