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Finding the Fourth Proportional to 133,371.80, 200,057.70 and 86,132.60

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Solution

The fourth proportional to 133,371.80, 200,057.70 and 86,132.60 is: 129,198.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,371.80 : 200,057.70 = 86,132.60 : x
  2. Step 2: Convert to fraction form
    133,371.80/200,057.70 = 86,132.60/x
  3. Step 3: Cross multiply
    133,371.80x = 200,057.70 × 86,132.60
  4. Step 4: Simplify right side
    133,371.80x = 17,231,489,851.02
  5. Step 5: Solve for x
    x = 17,231,489,851.02/133,371.80
  6. Step 6: Final answer
    x = 129,198.90

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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.