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Finding the Fourth Proportional to 159,483.34, 239,016.21 and 80,554.78

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Solution

The fourth proportional to 159,483.34, 239,016.21 and 80,554.78 is: 120,726.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,483.34 : 239,016.21 = 80,554.78 : x
  2. Step 2: Convert to fraction form
    159,483.34/239,016.21 = 80,554.78/x
  3. Step 3: Cross multiply
    159,483.34x = 239,016.21 × 80,554.78
  4. Step 4: Simplify right side
    159,483.34x = 19,253,898,212.98
  5. Step 5: Solve for x
    x = 19,253,898,212.98/159,483.34
  6. Step 6: Final answer
    x = 120,726.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.