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Finding the Fourth Proportional to 137,372.76, 206,028.16 and 69,836.38

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Solution

The fourth proportional to 137,372.76, 206,028.16 and 69,836.38 is: 104,738.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,372.76 : 206,028.16 = 69,836.38 : x
  2. Step 2: Convert to fraction form
    137,372.76/206,028.16 = 69,836.38/x
  3. Step 3: Cross multiply
    137,372.76x = 206,028.16 × 69,836.38
  4. Step 4: Simplify right side
    137,372.76x = 14,388,260,182.80
  5. Step 5: Solve for x
    x = 14,388,260,182.80/137,372.76
  6. Step 6: Final answer
    x = 104,738.82

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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.