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Finding the Fourth Proportional to 159,433.62, 220,028.38 and 87,813.62

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Solution

The fourth proportional to 159,433.62, 220,028.38 and 87,813.62 is: 121,188.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,433.62 : 220,028.38 = 87,813.62 : x
  2. Step 2: Convert to fraction form
    159,433.62/220,028.38 = 87,813.62/x
  3. Step 3: Cross multiply
    159,433.62x = 220,028.38 × 87,813.62
  4. Step 4: Simplify right side
    159,433.62x = 19,321,488,550.54
  5. Step 5: Solve for x
    x = 19,321,488,550.54/159,433.62
  6. Step 6: Final answer
    x = 121,188.29

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1.5x scale

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.