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Finding the Fourth Proportional to 159,195.62, 219,721.32 and 91,258.18

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Solution

The fourth proportional to 159,195.62, 219,721.32 and 91,258.18 is: 125,954.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,195.62 : 219,721.32 = 91,258.18 : x
  2. Step 2: Convert to fraction form
    159,195.62/219,721.32 = 91,258.18/x
  3. Step 3: Cross multiply
    159,195.62x = 219,721.32 × 91,258.18
  4. Step 4: Simplify right side
    159,195.62x = 20,051,367,770.40
  5. Step 5: Solve for x
    x = 20,051,367,770.40/159,195.62
  6. Step 6: Final answer
    x = 125,954.27

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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.