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Finding the Fourth Proportional to 123,560.74, 170,511.97 and 69,843.87

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Solution

The fourth proportional to 123,560.74, 170,511.97 and 69,843.87 is: 96,383.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,560.74 : 170,511.97 = 69,843.87 : x
  2. Step 2: Convert to fraction form
    123,560.74/170,511.97 = 69,843.87/x
  3. Step 3: Cross multiply
    123,560.74x = 170,511.97 × 69,843.87
  4. Step 4: Simplify right side
    123,560.74x = 11,909,214,664.34
  5. Step 5: Solve for x
    x = 11,909,214,664.34/123,560.74
  6. Step 6: Final answer
    x = 96,383.49

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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.