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Finding the Fourth Proportional to 201,934.65, 278,717.31 and 125,511.47

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Solution

The fourth proportional to 201,934.65, 278,717.31 and 125,511.47 is: 173,235.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,934.65 : 278,717.31 = 125,511.47 : x
  2. Step 2: Convert to fraction form
    201,934.65/278,717.31 = 125,511.47/x
  3. Step 3: Cross multiply
    201,934.65x = 278,717.31 × 125,511.47
  4. Step 4: Simplify right side
    201,934.65x = 34,982,217,898.96
  5. Step 5: Solve for x
    x = 34,982,217,898.96/201,934.65
  6. Step 6: Final answer
    x = 173,235.34

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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.