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Finding the Fourth Proportional to 138,878.46, 208,160.16 and 63,843.56

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Solution

The fourth proportional to 138,878.46, 208,160.16 and 63,843.56 is: 95,692.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,878.46 : 208,160.16 = 63,843.56 : x
  2. Step 2: Convert to fraction form
    138,878.46/208,160.16 = 63,843.56/x
  3. Step 3: Cross multiply
    138,878.46x = 208,160.16 × 63,843.56
  4. Step 4: Simplify right side
    138,878.46x = 13,289,685,664.57
  5. Step 5: Solve for x
    x = 13,289,685,664.57/138,878.46
  6. Step 6: Final answer
    x = 95,692.92

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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.