Home / 204,928.80-307,393.20-138,006.60

Finding the Fourth Proportional to 204,928.80, 307,393.20 and 138,006.60

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Solution

The fourth proportional to 204,928.80, 307,393.20 and 138,006.60 is: 207,009.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,928.80 : 307,393.20 = 138,006.60 : x
  2. Step 2: Convert to fraction form
    204,928.80/307,393.20 = 138,006.60/x
  3. Step 3: Cross multiply
    204,928.80x = 307,393.20 × 138,006.60
  4. Step 4: Simplify right side
    204,928.80x = 42,422,290,395.12
  5. Step 5: Solve for x
    x = 42,422,290,395.12/204,928.80
  6. Step 6: Final answer
    x = 207,009.90

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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.