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Finding the Fourth Proportional to 123,561.56, 170,513.09 and 69,844.68

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Solution

The fourth proportional to 123,561.56, 170,513.09 and 69,844.68 is: 96,384.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,561.56 : 170,513.09 = 69,844.68 : x
  2. Step 2: Convert to fraction form
    123,561.56/170,513.09 = 69,844.68/x
  3. Step 3: Cross multiply
    123,561.56x = 170,513.09 × 69,844.68
  4. Step 4: Simplify right side
    123,561.56x = 11,909,431,857.64
  5. Step 5: Solve for x
    x = 11,909,431,857.64/123,561.56
  6. Step 6: Final answer
    x = 96,384.61

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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.