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Finding the Fourth Proportional to 133,362.76, 199,940.28 and 66,768.60

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Solution

The fourth proportional to 133,362.76, 199,940.28 and 66,768.60 is: 100,100.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    133,362.76 : 199,940.28 = 66,768.60 : x
  2. Step 2: Convert to fraction form
    133,362.76/199,940.28 = 66,768.60/x
  3. Step 3: Cross multiply
    133,362.76x = 199,940.28 × 66,768.60
  4. Step 4: Simplify right side
    133,362.76x = 13,349,732,579.21
  5. Step 5: Solve for x
    x = 13,349,732,579.21/133,362.76
  6. Step 6: Final answer
    x = 100,100.90

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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.