Home / 138,880.48-208,258.44-82,747.02

Finding the Fourth Proportional to 138,880.48, 208,258.44 and 82,747.02

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Solution

The fourth proportional to 138,880.48, 208,258.44 and 82,747.02 is: 124,083.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,880.48 : 208,258.44 = 82,747.02 : x
  2. Step 2: Convert to fraction form
    138,880.48/208,258.44 = 82,747.02/x
  3. Step 3: Cross multiply
    138,880.48x = 208,258.44 × 82,747.02
  4. Step 4: Simplify right side
    138,880.48x = 17,232,766,382.40
  5. Step 5: Solve for x
    x = 17,232,766,382.40/138,880.48
  6. Step 6: Final answer
    x = 124,083.43

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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.