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Finding the Fourth Proportional to 119,891.95, 165,450.90 and 66,176.97

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Solution

The fourth proportional to 119,891.95, 165,450.90 and 66,176.97 is: 91,324.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,891.95 : 165,450.90 = 66,176.97 : x
  2. Step 2: Convert to fraction form
    119,891.95/165,450.90 = 66,176.97/x
  3. Step 3: Cross multiply
    119,891.95x = 165,450.90 × 66,176.97
  4. Step 4: Simplify right side
    119,891.95x = 10,949,040,269.49
  5. Step 5: Solve for x
    x = 10,949,040,269.49/119,891.95
  6. Step 6: Final answer
    x = 91,324.23

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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.