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Finding the Fourth Proportional to 201,943.68, 278,687.88 and 115,910.04

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Solution

The fourth proportional to 201,943.68, 278,687.88 and 115,910.04 is: 159,959.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,943.68 : 278,687.88 = 115,910.04 : x
  2. Step 2: Convert to fraction form
    201,943.68/278,687.88 = 115,910.04/x
  3. Step 3: Cross multiply
    201,943.68x = 278,687.88 × 115,910.04
  4. Step 4: Simplify right side
    201,943.68x = 32,302,723,318.32
  5. Step 5: Solve for x
    x = 32,302,723,318.32/201,943.68
  6. Step 6: Final answer
    x = 159,959.07

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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.