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Finding the Fourth Proportional to 172,062.65, 258,093.99 and 66,906.22

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Solution

The fourth proportional to 172,062.65, 258,093.99 and 66,906.22 is: 100,359.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    172,062.65 : 258,093.99 = 66,906.22 : x
  2. Step 2: Convert to fraction form
    172,062.65/258,093.99 = 66,906.22/x
  3. Step 3: Cross multiply
    172,062.65x = 258,093.99 × 66,906.22
  4. Step 4: Simplify right side
    172,062.65x = 17,268,093,275.62
  5. Step 5: Solve for x
    x = 17,268,093,275.62/172,062.65
  6. Step 6: Final answer
    x = 100,359.34

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.