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Finding the Fourth Proportional to 202,689.43, 279,709.57 and 112,047.69

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Solution

The fourth proportional to 202,689.43, 279,709.57 and 112,047.69 is: 154,624.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,689.43 : 279,709.57 = 112,047.69 : x
  2. Step 2: Convert to fraction form
    202,689.43/279,709.57 = 112,047.69/x
  3. Step 3: Cross multiply
    202,689.43x = 279,709.57 × 112,047.69
  4. Step 4: Simplify right side
    202,689.43x = 31,340,811,189.39
  5. Step 5: Solve for x
    x = 31,340,811,189.39/202,689.43
  6. Step 6: Final answer
    x = 154,624.79

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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.