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Finding the Fourth Proportional to 159,556.72, 220,179.72 and 87,922.48

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Solution

The fourth proportional to 159,556.72, 220,179.72 and 87,922.48 is: 121,328.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,556.72 : 220,179.72 = 87,922.48 : x
  2. Step 2: Convert to fraction form
    159,556.72/220,179.72 = 87,922.48/x
  3. Step 3: Cross multiply
    159,556.72x = 220,179.72 × 87,922.48
  4. Step 4: Simplify right side
    159,556.72x = 19,358,747,028.11
  5. Step 5: Solve for x
    x = 19,358,747,028.11/159,556.72
  6. Step 6: Final answer
    x = 121,328.31

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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.