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Finding the Fourth Proportional to 159,456.98, 220,049.61 and 87,835.34

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Solution

The fourth proportional to 159,456.98, 220,049.61 and 87,835.34 is: 121,212.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,456.98 : 220,049.61 = 87,835.34 : x
  2. Step 2: Convert to fraction form
    159,456.98/220,049.61 = 87,835.34/x
  3. Step 3: Cross multiply
    159,456.98x = 220,049.61 × 87,835.34
  4. Step 4: Simplify right side
    159,456.98x = 19,328,132,311.22
  5. Step 5: Solve for x
    x = 19,328,132,311.22/159,456.98
  6. Step 6: Final answer
    x = 121,212.21

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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.