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Finding the Fourth Proportional to 201,935.65, 278,718.69 and 125,512.47

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Solution

The fourth proportional to 201,935.65, 278,718.69 and 125,512.47 is: 173,236.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,935.65 : 278,718.69 = 125,512.47 : x
  2. Step 2: Convert to fraction form
    201,935.65/278,718.69 = 125,512.47/x
  3. Step 3: Cross multiply
    201,935.65x = 278,718.69 × 125,512.47
  4. Step 4: Simplify right side
    201,935.65x = 34,982,671,217.06
  5. Step 5: Solve for x
    x = 34,982,671,217.06/201,935.65
  6. Step 6: Final answer
    x = 173,236.73

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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.