Home / 159,383.81-219,945.38-87,764.42

Finding the Fourth Proportional to 159,383.81, 219,945.38 and 87,764.42

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Solution

The fourth proportional to 159,383.81, 219,945.38 and 87,764.42 is: 121,112.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,383.81 : 219,945.38 = 87,764.42 : x
  2. Step 2: Convert to fraction form
    159,383.81/219,945.38 = 87,764.42/x
  3. Step 3: Cross multiply
    159,383.81x = 219,945.38 × 87,764.42
  4. Step 4: Simplify right side
    159,383.81x = 19,303,377,168.83
  5. Step 5: Solve for x
    x = 19,303,377,168.83/159,383.81
  6. Step 6: Final answer
    x = 121,112.54

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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.