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Finding the Fourth Proportional to 159,194.62, 219,719.94 and 91,257.18

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Solution

The fourth proportional to 159,194.62, 219,719.94 and 91,257.18 is: 125,952.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,194.62 : 219,719.94 = 91,257.18 : x
  2. Step 2: Convert to fraction form
    159,194.62/219,719.94 = 91,257.18/x
  3. Step 3: Cross multiply
    159,194.62x = 219,719.94 × 91,257.18
  4. Step 4: Simplify right side
    159,194.62x = 20,051,022,114.17
  5. Step 5: Solve for x
    x = 20,051,022,114.17/159,194.62
  6. Step 6: Final answer
    x = 125,952.89

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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.