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Finding the Fourth Proportional to 123,205.73, 170,024.87 and 68,016.78

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Solution

The fourth proportional to 123,205.73, 170,024.87 and 68,016.78 is: 93,863.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,205.73 : 170,024.87 = 68,016.78 : x
  2. Step 2: Convert to fraction form
    123,205.73/170,024.87 = 68,016.78/x
  3. Step 3: Cross multiply
    123,205.73x = 170,024.87 × 68,016.78
  4. Step 4: Simplify right side
    123,205.73x = 11,564,544,347.36
  5. Step 5: Solve for x
    x = 11,564,544,347.36/123,205.73
  6. Step 6: Final answer
    x = 93,863.69

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1.5x scale

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.