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Finding the Fourth Proportional to 123,277.56, 170,121.69 and 69,579.96

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Solution

The fourth proportional to 123,277.56, 170,121.69 and 69,579.96 is: 96,019.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,277.56 : 170,121.69 = 69,579.96 : x
  2. Step 2: Convert to fraction form
    123,277.56/170,121.69 = 69,579.96/x
  3. Step 3: Cross multiply
    123,277.56x = 170,121.69 × 69,579.96
  4. Step 4: Simplify right side
    123,277.56x = 11,837,060,385.33
  5. Step 5: Solve for x
    x = 11,837,060,385.33/123,277.56
  6. Step 6: Final answer
    x = 96,019.59

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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.