Home / 138,039.15-207,063.32-38,190.98

Finding the Fourth Proportional to 138,039.15, 207,063.32 and 38,190.98

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Solution

The fourth proportional to 138,039.15, 207,063.32 and 38,190.98 is: 57,287.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,039.15 : 207,063.32 = 38,190.98 : x
  2. Step 2: Convert to fraction form
    138,039.15/207,063.32 = 38,190.98/x
  3. Step 3: Cross multiply
    138,039.15x = 207,063.32 × 38,190.98
  4. Step 4: Simplify right side
    138,039.15x = 7,907,951,725.99
  5. Step 5: Solve for x
    x = 7,907,951,725.99/138,039.15
  6. Step 6: Final answer
    x = 57,287.75

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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.