Home / 138,724.36-207,961.63-49,915.41

Finding the Fourth Proportional to 138,724.36, 207,961.63 and 49,915.41

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Solution

The fourth proportional to 138,724.36, 207,961.63 and 49,915.41 is: 74,828.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,724.36 : 207,961.63 = 49,915.41 : x
  2. Step 2: Convert to fraction form
    138,724.36/207,961.63 = 49,915.41/x
  3. Step 3: Cross multiply
    138,724.36x = 207,961.63 × 49,915.41
  4. Step 4: Simplify right side
    138,724.36x = 10,380,489,121.07
  5. Step 5: Solve for x
    x = 10,380,489,121.07/138,724.36
  6. Step 6: Final answer
    x = 74,828.17

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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.