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Finding the Fourth Proportional to 159,499.82, 220,110.18 and 87,879.62

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Solution

The fourth proportional to 159,499.82, 220,110.18 and 87,879.62 is: 121,274.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,499.82 : 220,110.18 = 87,879.62 : x
  2. Step 2: Convert to fraction form
    159,499.82/220,110.18 = 87,879.62/x
  3. Step 3: Cross multiply
    159,499.82x = 220,110.18 × 87,879.62
  4. Step 4: Simplify right side
    159,499.82x = 19,343,198,976.53
  5. Step 5: Solve for x
    x = 19,343,198,976.53/159,499.82
  6. Step 6: Final answer
    x = 121,274.11

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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.