Home / 151,280.80-226,921.20-138,839.20

Finding the Fourth Proportional to 151,280.80, 226,921.20 and 138,839.20

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Solution

The fourth proportional to 151,280.80, 226,921.20 and 138,839.20 is: 208,258.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    151,280.80 : 226,921.20 = 138,839.20 : x
  2. Step 2: Convert to fraction form
    151,280.80/226,921.20 = 138,839.20/x
  3. Step 3: Cross multiply
    151,280.80x = 226,921.20 × 138,839.20
  4. Step 4: Simplify right side
    151,280.80x = 31,505,557,871.04
  5. Step 5: Solve for x
    x = 31,505,557,871.04/151,280.80
  6. Step 6: Final answer
    x = 208,258.80

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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.