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Finding the Fourth Proportional to 123,204.89, 170,022.51 and 69,489.74

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Solution

The fourth proportional to 123,204.89, 170,022.51 and 69,489.74 is: 95,895.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,204.89 : 170,022.51 = 69,489.74 : x
  2. Step 2: Convert to fraction form
    123,204.89/170,022.51 = 69,489.74/x
  3. Step 3: Cross multiply
    123,204.89x = 170,022.51 × 69,489.74
  4. Step 4: Simplify right side
    123,204.89x = 11,814,819,163.93
  5. Step 5: Solve for x
    x = 11,814,819,163.93/123,204.89
  6. Step 6: Final answer
    x = 95,895.70

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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.