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Finding the Fourth Proportional to 120,736.79, 166,624.56 and 69,751.70

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Solution

The fourth proportional to 120,736.79, 166,624.56 and 69,751.70 is: 96,261.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,736.79 : 166,624.56 = 69,751.70 : x
  2. Step 2: Convert to fraction form
    120,736.79/166,624.56 = 69,751.70/x
  3. Step 3: Cross multiply
    120,736.79x = 166,624.56 × 69,751.70
  4. Step 4: Simplify right side
    120,736.79x = 11,622,346,321.75
  5. Step 5: Solve for x
    x = 11,622,346,321.75/120,736.79
  6. Step 6: Final answer
    x = 96,261.85

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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.