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Finding the Fourth Proportional to 138,797.96, 208,283.05 and 63,928.74

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Solution

The fourth proportional to 138,797.96, 208,283.05 and 63,928.74 is: 95,932.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,797.96 : 208,283.05 = 63,928.74 : x
  2. Step 2: Convert to fraction form
    138,797.96/208,283.05 = 63,928.74/x
  3. Step 3: Cross multiply
    138,797.96x = 208,283.05 × 63,928.74
  4. Step 4: Simplify right side
    138,797.96x = 13,315,273,451.23
  5. Step 5: Solve for x
    x = 13,315,273,451.23/138,797.96
  6. Step 6: Final answer
    x = 95,932.78

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.