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Finding the Fourth Proportional to 123,382.98, 170,268.48 and 66,794.31

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Solution

The fourth proportional to 123,382.98, 170,268.48 and 66,794.31 is: 92,176.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,382.98 : 170,268.48 = 66,794.31 : x
  2. Step 2: Convert to fraction form
    123,382.98/170,268.48 = 66,794.31/x
  3. Step 3: Cross multiply
    123,382.98x = 170,268.48 × 66,794.31
  4. Step 4: Simplify right side
    123,382.98x = 11,372,965,636.35
  5. Step 5: Solve for x
    x = 11,372,965,636.35/123,382.98
  6. Step 6: Final answer
    x = 92,176.13

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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.