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Finding the Fourth Proportional to 166,806.72, 230,184.72 and 91,353.60

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Solution

The fourth proportional to 166,806.72, 230,184.72 and 91,353.60 is: 126,063.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    166,806.72 : 230,184.72 = 91,353.60 : x
  2. Step 2: Convert to fraction form
    166,806.72/230,184.72 = 91,353.60/x
  3. Step 3: Cross multiply
    166,806.72x = 230,184.72 × 91,353.60
  4. Step 4: Simplify right side
    166,806.72x = 21,028,202,836.99
  5. Step 5: Solve for x
    x = 21,028,202,836.99/166,806.72
  6. Step 6: Final answer
    x = 126,063.28

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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.