Home / 138,039.26-207,063.47-38,191.07

Finding the Fourth Proportional to 138,039.26, 207,063.47 and 38,191.07

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Solution

The fourth proportional to 138,039.26, 207,063.47 and 38,191.07 is: 57,287.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,039.26 : 207,063.47 = 38,191.07 : x
  2. Step 2: Convert to fraction form
    138,039.26/207,063.47 = 38,191.07/x
  3. Step 3: Cross multiply
    138,039.26x = 207,063.47 × 38,191.07
  4. Step 4: Simplify right side
    138,039.26x = 7,907,976,090.35
  5. Step 5: Solve for x
    x = 7,907,976,090.35/138,039.26
  6. Step 6: Final answer
    x = 57,287.88

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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.