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Finding the Fourth Proportional to 115,170.66, 158,940.92 and 67,439.38

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Solution

The fourth proportional to 115,170.66, 158,940.92 and 67,439.38 is: 93,069.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,170.66 : 158,940.92 = 67,439.38 : x
  2. Step 2: Convert to fraction form
    115,170.66/158,940.92 = 67,439.38/x
  3. Step 3: Cross multiply
    115,170.66x = 158,940.92 × 67,439.38
  4. Step 4: Simplify right side
    115,170.66x = 10,718,876,764.23
  5. Step 5: Solve for x
    x = 10,718,876,764.23/115,170.66
  6. Step 6: Final answer
    x = 93,069.51

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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.