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Finding the Fourth Proportional to 123,558, 170,512.66 and 69,839.81

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Solution

The fourth proportional to 123,558, 170,512.66 and 69,839.81 is: 96,380.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,558 : 170,512.66 = 69,839.81 : x
  2. Step 2: Convert to fraction form
    123,558/170,512.66 = 69,839.81/x
  3. Step 3: Cross multiply
    123,558x = 170,512.66 × 69,839.81
  4. Step 4: Simplify right side
    123,558x = 11,908,571,776.99
  5. Step 5: Solve for x
    x = 11,908,571,776.99/123,558
  6. Step 6: Final answer
    x = 96,380.42

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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.