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Finding the Fourth Proportional to 137,102.76, 205,571.07 and 89,660.57

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Solution

The fourth proportional to 137,102.76, 205,571.07 and 89,660.57 is: 134,436.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,102.76 : 205,571.07 = 89,660.57 : x
  2. Step 2: Convert to fraction form
    137,102.76/205,571.07 = 89,660.57/x
  3. Step 3: Cross multiply
    137,102.76x = 205,571.07 × 89,660.57
  4. Step 4: Simplify right side
    137,102.76x = 18,431,618,283.85
  5. Step 5: Solve for x
    x = 18,431,618,283.85/137,102.76
  6. Step 6: Final answer
    x = 134,436.52

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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.