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Finding the Fourth Proportional to 113,351.88, 169,872.30 and 71,724.36

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Solution

The fourth proportional to 113,351.88, 169,872.30 and 71,724.36 is: 107,488.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,351.88 : 169,872.30 = 71,724.36 : x
  2. Step 2: Convert to fraction form
    113,351.88/169,872.30 = 71,724.36/x
  3. Step 3: Cross multiply
    113,351.88x = 169,872.30 × 71,724.36
  4. Step 4: Simplify right side
    113,351.88x = 12,183,981,999.23
  5. Step 5: Solve for x
    x = 12,183,981,999.23/113,351.88
  6. Step 6: Final answer
    x = 107,488.13

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.