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Finding the Fourth Proportional to 159,940.06, 220,711.71 and 91,954.78

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Solution

The fourth proportional to 159,940.06, 220,711.71 and 91,954.78 is: 126,894.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,940.06 : 220,711.71 = 91,954.78 : x
  2. Step 2: Convert to fraction form
    159,940.06/220,711.71 = 91,954.78/x
  3. Step 3: Cross multiply
    159,940.06x = 220,711.71 × 91,954.78
  4. Step 4: Simplify right side
    159,940.06x = 20,295,496,736.47
  5. Step 5: Solve for x
    x = 20,295,496,736.47/159,940.06
  6. Step 6: Final answer
    x = 126,894.39

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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.