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Finding the Fourth Proportional to 138,039.00, 207,063.11 and 38,190.84

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Solution

The fourth proportional to 138,039.00, 207,063.11 and 38,190.84 is: 57,287.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,039.00 : 207,063.11 = 38,190.84 : x
  2. Step 2: Convert to fraction form
    138,039.00/207,063.11 = 38,190.84/x
  3. Step 3: Cross multiply
    138,039.00x = 207,063.11 × 38,190.84
  4. Step 4: Simplify right side
    138,039.00x = 7,907,913,395.30
  5. Step 5: Solve for x
    x = 7,907,913,395.30/138,039.00
  6. Step 6: Final answer
    x = 57,287.53

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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.