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Finding the Fourth Proportional to 159,578.80, 220,202.51 and 91,579.50

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Solution

The fourth proportional to 159,578.80, 220,202.51 and 91,579.50 is: 126,370.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,578.80 : 220,202.51 = 91,579.50 : x
  2. Step 2: Convert to fraction form
    159,578.80/220,202.51 = 91,579.50/x
  3. Step 3: Cross multiply
    159,578.80x = 220,202.51 × 91,579.50
  4. Step 4: Simplify right side
    159,578.80x = 20,166,035,764.55
  5. Step 5: Solve for x
    x = 20,166,035,764.55/159,578.80
  6. Step 6: Final answer
    x = 126,370.39

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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.