Home / 203,986.10-281,410.25-135,936.78

Finding the Fourth Proportional to 203,986.10, 281,410.25 and 135,936.78

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Solution

The fourth proportional to 203,986.10, 281,410.25 and 135,936.78 is: 187,532.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,986.10 : 281,410.25 = 135,936.78 : x
  2. Step 2: Convert to fraction form
    203,986.10/281,410.25 = 135,936.78/x
  3. Step 3: Cross multiply
    203,986.10x = 281,410.25 × 135,936.78
  4. Step 4: Simplify right side
    203,986.10x = 38,254,002,564.31
  5. Step 5: Solve for x
    x = 38,254,002,564.31/203,986.10
  6. Step 6: Final answer
    x = 187,532.40

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.