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Finding the Fourth Proportional to 138,800.82, 208,168.41 and 63,874.20

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Solution

The fourth proportional to 138,800.82, 208,168.41 and 63,874.20 is: 95,796.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,800.82 : 208,168.41 = 63,874.20 : x
  2. Step 2: Convert to fraction form
    138,800.82/208,168.41 = 63,874.20/x
  3. Step 3: Cross multiply
    138,800.82x = 208,168.41 × 63,874.20
  4. Step 4: Simplify right side
    138,800.82x = 13,296,590,654.02
  5. Step 5: Solve for x
    x = 13,296,590,654.02/138,800.82
  6. Step 6: Final answer
    x = 95,796.20

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1.5x scale

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.