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Finding the Fourth Proportional to 138,491.44, 207,696.15 and 38,627.56

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Solution

The fourth proportional to 138,491.44, 207,696.15 and 38,627.56 is: 57,929.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,491.44 : 207,696.15 = 38,627.56 : x
  2. Step 2: Convert to fraction form
    138,491.44/207,696.15 = 38,627.56/x
  3. Step 3: Cross multiply
    138,491.44x = 207,696.15 × 38,627.56
  4. Step 4: Simplify right side
    138,491.44x = 8,022,795,495.89
  5. Step 5: Solve for x
    x = 8,022,795,495.89/138,491.44
  6. Step 6: Final answer
    x = 57,929.90

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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.