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Finding the Fourth Proportional to 117,660.80, 176,548.80 and 89,571.20

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Solution

The fourth proportional to 117,660.80, 176,548.80 and 89,571.20 is: 134,400.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,660.80 : 176,548.80 = 89,571.20 : x
  2. Step 2: Convert to fraction form
    117,660.80/176,548.80 = 89,571.20/x
  3. Step 3: Cross multiply
    117,660.80x = 176,548.80 × 89,571.20
  4. Step 4: Simplify right side
    117,660.80x = 15,813,687,874.56
  5. Step 5: Solve for x
    x = 15,813,687,874.56/117,660.80
  6. Step 6: Final answer
    x = 134,400.65

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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.