Home / 138,258.30-207,387.32-38,418.44

Finding the Fourth Proportional to 138,258.30, 207,387.32 and 38,418.44

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Solution

The fourth proportional to 138,258.30, 207,387.32 and 38,418.44 is: 57,627.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,258.30 : 207,387.32 = 38,418.44 : x
  2. Step 2: Convert to fraction form
    138,258.30/207,387.32 = 38,418.44/x
  3. Step 3: Cross multiply
    138,258.30x = 207,387.32 × 38,418.44
  4. Step 4: Simplify right side
    138,258.30x = 7,967,497,310.18
  5. Step 5: Solve for x
    x = 7,967,497,310.18/138,258.30
  6. Step 6: Final answer
    x = 57,627.62

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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.