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Finding the Fourth Proportional to 202,709.36, 279,670.44 and 131,179.76

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Solution

The fourth proportional to 202,709.36, 279,670.44 and 131,179.76 is: 180,983.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,709.36 : 279,670.44 = 131,179.76 : x
  2. Step 2: Convert to fraction form
    202,709.36/279,670.44 = 131,179.76/x
  3. Step 3: Cross multiply
    202,709.36x = 279,670.44 × 131,179.76
  4. Step 4: Simplify right side
    202,709.36x = 36,687,101,198.29
  5. Step 5: Solve for x
    x = 36,687,101,198.29/202,709.36
  6. Step 6: Final answer
    x = 180,983.76

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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.