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Finding the Fourth Proportional to 159,906.84, 220,671.78 and 88,287

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Solution

The fourth proportional to 159,906.84, 220,671.78 and 88,287 is: 121,836.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    159,906.84 : 220,671.78 = 88,287 : x
  2. Step 2: Convert to fraction form
    159,906.84/220,671.78 = 88,287/x
  3. Step 3: Cross multiply
    159,906.84x = 220,671.78 × 88,287
  4. Step 4: Simplify right side
    159,906.84x = 19,482,449,440.86
  5. Step 5: Solve for x
    x = 19,482,449,440.86/159,906.84
  6. Step 6: Final answer
    x = 121,836.25

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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.