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Finding the Fourth Proportional to 123,063.75, 169,828.05 and 66,475.14

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Solution

The fourth proportional to 123,063.75, 169,828.05 and 66,475.14 is: 91,735.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,063.75 : 169,828.05 = 66,475.14 : x
  2. Step 2: Convert to fraction form
    123,063.75/169,828.05 = 66,475.14/x
  3. Step 3: Cross multiply
    123,063.75x = 169,828.05 × 66,475.14
  4. Step 4: Simplify right side
    123,063.75x = 11,289,343,399.68
  5. Step 5: Solve for x
    x = 11,289,343,399.68/123,063.75
  6. Step 6: Final answer
    x = 91,735.73

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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.