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Finding the Fourth Proportional to 133,512.60, 200,220.30 and 66,930.60

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Solution

The fourth proportional to 133,512.60, 200,220.30 and 66,930.60 is: 100,371.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,512.60 : 200,220.30 = 66,930.60 : x
  2. Step 2: Convert to fraction form
    133,512.60/200,220.30 = 66,930.60/x
  3. Step 3: Cross multiply
    133,512.60x = 200,220.30 × 66,930.60
  4. Step 4: Simplify right side
    133,512.60x = 13,400,864,811.18
  5. Step 5: Solve for x
    x = 13,400,864,811.18/133,512.60
  6. Step 6: Final answer
    x = 100,371.54

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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.