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Finding the Fourth Proportional to 159,345.23, 219,933.81 and 91,360.98

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Solution

The fourth proportional to 159,345.23, 219,933.81 and 91,360.98 is: 126,099.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,345.23 : 219,933.81 = 91,360.98 : x
  2. Step 2: Convert to fraction form
    159,345.23/219,933.81 = 91,360.98/x
  3. Step 3: Cross multiply
    159,345.23x = 219,933.81 × 91,360.98
  4. Step 4: Simplify right side
    159,345.23x = 20,093,368,416.73
  5. Step 5: Solve for x
    x = 20,093,368,416.73/159,345.23
  6. Step 6: Final answer
    x = 126,099.60

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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.