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Finding the Fourth Proportional to 202,728.29, 279,753.75 and 112,078.97

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Solution

The fourth proportional to 202,728.29, 279,753.75 and 112,078.97 is: 154,662.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,728.29 : 279,753.75 = 112,078.97 : x
  2. Step 2: Convert to fraction form
    202,728.29/279,753.75 = 112,078.97/x
  3. Step 3: Cross multiply
    202,728.29x = 279,753.75 × 112,078.97
  4. Step 4: Simplify right side
    202,728.29x = 31,354,511,017.14
  5. Step 5: Solve for x
    x = 31,354,511,017.14/202,728.29
  6. Step 6: Final answer
    x = 154,662.73

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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.