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Finding the Fourth Proportional to 123,383.68, 170,269.47 and 68,935.86

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Solution

The fourth proportional to 123,383.68, 170,269.47 and 68,935.86 is: 95,131.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,383.68 : 170,269.47 = 68,935.86 : x
  2. Step 2: Convert to fraction form
    123,383.68/170,269.47 = 68,935.86/x
  3. Step 3: Cross multiply
    123,383.68x = 170,269.47 × 68,935.86
  4. Step 4: Simplify right side
    123,383.68x = 11,737,672,152.31
  5. Step 5: Solve for x
    x = 11,737,672,152.31/123,383.68
  6. Step 6: Final answer
    x = 95,131.48

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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.