Home / 259,541.20-389,238.90-82,102.60

Finding the Fourth Proportional to 259,541.20, 389,238.90 and 82,102.60

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Solution

The fourth proportional to 259,541.20, 389,238.90 and 82,102.60 is: 123,130.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    259,541.20 : 389,238.90 = 82,102.60 : x
  2. Step 2: Convert to fraction form
    259,541.20/389,238.90 = 82,102.60/x
  3. Step 3: Cross multiply
    259,541.20x = 389,238.90 × 82,102.60
  4. Step 4: Simplify right side
    259,541.20x = 31,957,525,711.14
  5. Step 5: Solve for x
    x = 31,957,525,711.14/259,541.20
  6. Step 6: Final answer
    x = 123,130.84

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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.