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Finding the Fourth Proportional to 123,971.94, 171,081.26 and 67,383.32

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Solution

The fourth proportional to 123,971.94, 171,081.26 and 67,383.32 is: 92,988.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,971.94 : 171,081.26 = 67,383.32 : x
  2. Step 2: Convert to fraction form
    123,971.94/171,081.26 = 67,383.32/x
  3. Step 3: Cross multiply
    123,971.94x = 171,081.26 × 67,383.32
  4. Step 4: Simplify right side
    123,971.94x = 11,528,023,209.15
  5. Step 5: Solve for x
    x = 11,528,023,209.15/123,971.94
  6. Step 6: Final answer
    x = 92,988.97

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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.