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Finding the Fourth Proportional to 202,709.04, 279,736.65 and 112,067.31

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Solution

The fourth proportional to 202,709.04, 279,736.65 and 112,067.31 is: 154,651.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,709.04 : 279,736.65 = 112,067.31 : x
  2. Step 2: Convert to fraction form
    202,709.04/279,736.65 = 112,067.31/x
  3. Step 3: Cross multiply
    202,709.04x = 279,736.65 × 112,067.31
  4. Step 4: Simplify right side
    202,709.04x = 31,349,333,873.91
  5. Step 5: Solve for x
    x = 31,349,333,873.91/202,709.04
  6. Step 6: Final answer
    x = 154,651.88

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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.