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Finding the Fourth Proportional to 123,911.70, 170,998.11 and 67,323.30

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Solution

The fourth proportional to 123,911.70, 170,998.11 and 67,323.30 is: 92,906.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,911.70 : 170,998.11 = 67,323.30 : x
  2. Step 2: Convert to fraction form
    123,911.70/170,998.11 = 67,323.30/x
  3. Step 3: Cross multiply
    123,911.70x = 170,998.11 × 67,323.30
  4. Step 4: Simplify right side
    123,911.70x = 11,512,157,058.96
  5. Step 5: Solve for x
    x = 11,512,157,058.96/123,911.70
  6. Step 6: Final answer
    x = 92,906.13

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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.