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Finding the Fourth Proportional to 159,178.22, 219,662.36 and 87,556.66

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Solution

The fourth proportional to 159,178.22, 219,662.36 and 87,556.66 is: 120,826.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,178.22 : 219,662.36 = 87,556.66 : x
  2. Step 2: Convert to fraction form
    159,178.22/219,662.36 = 87,556.66/x
  3. Step 3: Cross multiply
    159,178.22x = 219,662.36 × 87,556.66
  4. Step 4: Simplify right side
    159,178.22x = 19,232,902,569.32
  5. Step 5: Solve for x
    x = 19,232,902,569.32/159,178.22
  6. Step 6: Final answer
    x = 120,826.22

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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.