Home / 138,436.47-207,589.70-82,284.03

Finding the Fourth Proportional to 138,436.47, 207,589.70 and 82,284.03

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Solution

The fourth proportional to 138,436.47, 207,589.70 and 82,284.03 is: 123,387.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,436.47 : 207,589.70 = 82,284.03 : x
  2. Step 2: Convert to fraction form
    138,436.47/207,589.70 = 82,284.03/x
  3. Step 3: Cross multiply
    138,436.47x = 207,589.70 × 82,284.03
  4. Step 4: Simplify right side
    138,436.47x = 17,081,317,308.20
  5. Step 5: Solve for x
    x = 17,081,317,308.20/138,436.47
  6. Step 6: Final answer
    x = 123,387.41

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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.