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Finding the Fourth Proportional to 162,609.56, 244,018.44 and 87,781.80

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Solution

The fourth proportional to 162,609.56, 244,018.44 and 87,781.80 is: 131,728.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    162,609.56 : 244,018.44 = 87,781.80 : x
  2. Step 2: Convert to fraction form
    162,609.56/244,018.44 = 87,781.80/x
  3. Step 3: Cross multiply
    162,609.56x = 244,018.44 × 87,781.80
  4. Step 4: Simplify right side
    162,609.56x = 21,420,377,896.39
  5. Step 5: Solve for x
    x = 21,420,377,896.39/162,609.56
  6. Step 6: Final answer
    x = 131,728.90

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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.