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Finding the Fourth Proportional to 89,963.75, 134,787.06 and 80,190.29

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Solution

The fourth proportional to 89,963.75, 134,787.06 and 80,190.29 is: 120,144.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,963.75 : 134,787.06 = 80,190.29 : x
  2. Step 2: Convert to fraction form
    89,963.75/134,787.06 = 80,190.29/x
  3. Step 3: Cross multiply
    89,963.75x = 134,787.06 × 80,190.29
  4. Step 4: Simplify right side
    89,963.75x = 10,808,612,755.71
  5. Step 5: Solve for x
    x = 10,808,612,755.71/89,963.75
  6. Step 6: Final answer
    x = 120,144.10

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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.