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Finding the Fourth Proportional to 123,101.93, 169,888.65 and 68,660.21

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Solution

The fourth proportional to 123,101.93, 169,888.65 and 68,660.21 is: 94,755.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,101.93 : 169,888.65 = 68,660.21 : x
  2. Step 2: Convert to fraction form
    123,101.93/169,888.65 = 68,660.21/x
  3. Step 3: Cross multiply
    123,101.93x = 169,888.65 × 68,660.21
  4. Step 4: Simplify right side
    123,101.93x = 11,664,590,385.62
  5. Step 5: Solve for x
    x = 11,664,590,385.62/123,101.93
  6. Step 6: Final answer
    x = 94,755.54

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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.