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Finding the Fourth Proportional to 140,659.13, 210,982.22 and 51,906.89

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Solution

The fourth proportional to 140,659.13, 210,982.22 and 51,906.89 is: 77,857.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,659.13 : 210,982.22 = 51,906.89 : x
  2. Step 2: Convert to fraction form
    140,659.13/210,982.22 = 51,906.89/x
  3. Step 3: Cross multiply
    140,659.13x = 210,982.22 × 51,906.89
  4. Step 4: Simplify right side
    140,659.13x = 10,951,430,625.96
  5. Step 5: Solve for x
    x = 10,951,430,625.96/140,659.13
  6. Step 6: Final answer
    x = 77,857.94

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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.