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Finding the Fourth Proportional to 133,512.10, 200,219.55 and 66,930.10

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Solution

The fourth proportional to 133,512.10, 200,219.55 and 66,930.10 is: 100,370.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,512.10 : 200,219.55 = 66,930.10 : x
  2. Step 2: Convert to fraction form
    133,512.10/200,219.55 = 66,930.10/x
  3. Step 3: Cross multiply
    133,512.10x = 200,219.55 × 66,930.10
  4. Step 4: Simplify right side
    133,512.10x = 13,400,714,503.46
  5. Step 5: Solve for x
    x = 13,400,714,503.46/133,512.10
  6. Step 6: Final answer
    x = 100,370.79

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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.