Home / 200,078.49-300,158.24-81,759.36

Finding the Fourth Proportional to 200,078.49, 300,158.24 and 81,759.36

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Solution

The fourth proportional to 200,078.49, 300,158.24 and 81,759.36 is: 122,655.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,078.49 : 300,158.24 = 81,759.36 : x
  2. Step 2: Convert to fraction form
    200,078.49/300,158.24 = 81,759.36/x
  3. Step 3: Cross multiply
    200,078.49x = 300,158.24 × 81,759.36
  4. Step 4: Simplify right side
    200,078.49x = 24,540,745,192.33
  5. Step 5: Solve for x
    x = 24,540,745,192.33/200,078.49
  6. Step 6: Final answer
    x = 122,655.59

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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.