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Finding the Fourth Proportional to 159,177.56, 219,662.69 and 87,553.31

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Solution

The fourth proportional to 159,177.56, 219,662.69 and 87,553.31 is: 120,822.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,177.56 : 219,662.69 = 87,553.31 : x
  2. Step 2: Convert to fraction form
    159,177.56/219,662.69 = 87,553.31/x
  3. Step 3: Cross multiply
    159,177.56x = 219,662.69 × 87,553.31
  4. Step 4: Simplify right side
    159,177.56x = 19,232,194,056.92
  5. Step 5: Solve for x
    x = 19,232,194,056.92/159,177.56
  6. Step 6: Final answer
    x = 120,822.27

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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.