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Finding the Fourth Proportional to 159,787.22, 220,497.78 and 88,153.22

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Solution

The fourth proportional to 159,787.22, 220,497.78 and 88,153.22 is: 121,646.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,787.22 : 220,497.78 = 88,153.22 : x
  2. Step 2: Convert to fraction form
    159,787.22/220,497.78 = 88,153.22/x
  3. Step 3: Cross multiply
    159,787.22x = 220,497.78 × 88,153.22
  4. Step 4: Simplify right side
    159,787.22x = 19,437,589,309.85
  5. Step 5: Solve for x
    x = 19,437,589,309.85/159,787.22
  6. Step 6: Final answer
    x = 121,646.71

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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.