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Finding the Fourth Proportional to 159,599.81, 220,249.27 and 87,982.39

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Solution

The fourth proportional to 159,599.81, 220,249.27 and 87,982.39 is: 121,416.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,599.81 : 220,249.27 = 87,982.39 : x
  2. Step 2: Convert to fraction form
    159,599.81/220,249.27 = 87,982.39/x
  3. Step 3: Cross multiply
    159,599.81x = 220,249.27 × 87,982.39
  4. Step 4: Simplify right side
    159,599.81x = 19,378,057,170.36
  5. Step 5: Solve for x
    x = 19,378,057,170.36/159,599.81
  6. Step 6: Final answer
    x = 121,416.54

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.