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Finding the Fourth Proportional to 120,443.55, 166,204.91 and 66,724.68

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Solution

The fourth proportional to 120,443.55, 166,204.91 and 66,724.68 is: 92,076.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,443.55 : 166,204.91 = 66,724.68 : x
  2. Step 2: Convert to fraction form
    120,443.55/166,204.91 = 66,724.68/x
  3. Step 3: Cross multiply
    120,443.55x = 166,204.91 × 66,724.68
  4. Step 4: Simplify right side
    120,443.55x = 11,089,969,100.56
  5. Step 5: Solve for x
    x = 11,089,969,100.56/120,443.55
  6. Step 6: Final answer
    x = 92,076.07

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.