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Finding the Fourth Proportional to 133,486.30, 200,229.45 and 80,998.30

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Solution

The fourth proportional to 133,486.30, 200,229.45 and 80,998.30 is: 121,497.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,486.30 : 200,229.45 = 80,998.30 : x
  2. Step 2: Convert to fraction form
    133,486.30/200,229.45 = 80,998.30/x
  3. Step 3: Cross multiply
    133,486.30x = 200,229.45 × 80,998.30
  4. Step 4: Simplify right side
    133,486.30x = 16,218,245,059.94
  5. Step 5: Solve for x
    x = 16,218,245,059.94/133,486.30
  6. Step 6: Final answer
    x = 121,497.45

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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.