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Finding the Fourth Proportional to 138,093.30, 207,127.80 and 38,244.60

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Solution

The fourth proportional to 138,093.30, 207,127.80 and 38,244.60 is: 57,363.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,093.30 : 207,127.80 = 38,244.60 : x
  2. Step 2: Convert to fraction form
    138,093.30/207,127.80 = 38,244.60/x
  3. Step 3: Cross multiply
    138,093.30x = 207,127.80 × 38,244.60
  4. Step 4: Simplify right side
    138,093.30x = 7,921,519,859.88
  5. Step 5: Solve for x
    x = 7,921,519,859.88/138,093.30
  6. Step 6: Final answer
    x = 57,363.54

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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.