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Finding the Fourth Proportional to 202,715.47, 279,723.03 and 112,059.15

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Solution

The fourth proportional to 202,715.47, 279,723.03 and 112,059.15 is: 154,628.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,715.47 : 279,723.03 = 112,059.15 : x
  2. Step 2: Convert to fraction form
    202,715.47/279,723.03 = 112,059.15/x
  3. Step 3: Cross multiply
    202,715.47x = 279,723.03 × 112,059.15
  4. Step 4: Simplify right side
    202,715.47x = 31,345,524,977.22
  5. Step 5: Solve for x
    x = 31,345,524,977.22/202,715.47
  6. Step 6: Final answer
    x = 154,628.18

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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.