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Finding the Fourth Proportional to 138,797.80, 208,165.54 and 63,845.96

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Solution

The fourth proportional to 138,797.80, 208,165.54 and 63,845.96 is: 95,754.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,797.80 : 208,165.54 = 63,845.96 : x
  2. Step 2: Convert to fraction form
    138,797.80/208,165.54 = 63,845.96/x
  3. Step 3: Cross multiply
    138,797.80x = 208,165.54 × 63,845.96
  4. Step 4: Simplify right side
    138,797.80x = 13,290,528,740.22
  5. Step 5: Solve for x
    x = 13,290,528,740.22/138,797.80
  6. Step 6: Final answer
    x = 95,754.61

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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.