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Finding the Fourth Proportional to 138,795.66, 208,162.35 and 63,843.84

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Solution

The fourth proportional to 138,795.66, 208,162.35 and 63,843.84 is: 95,751.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,795.66 : 208,162.35 = 63,843.84 : x
  2. Step 2: Convert to fraction form
    138,795.66/208,162.35 = 63,843.84/x
  3. Step 3: Cross multiply
    138,795.66x = 208,162.35 × 63,843.84
  4. Step 4: Simplify right side
    138,795.66x = 13,289,883,767.42
  5. Step 5: Solve for x
    x = 13,289,883,767.42/138,795.66
  6. Step 6: Final answer
    x = 95,751.44

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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.