Home / 204,820.10-307,230.15-120,839.30

Finding the Fourth Proportional to 204,820.10, 307,230.15 and 120,839.30

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Solution

The fourth proportional to 204,820.10, 307,230.15 and 120,839.30 is: 181,258.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,820.10 : 307,230.15 = 120,839.30 : x
  2. Step 2: Convert to fraction form
    204,820.10/307,230.15 = 120,839.30/x
  3. Step 3: Cross multiply
    204,820.10x = 307,230.15 × 120,839.30
  4. Step 4: Simplify right side
    204,820.10x = 37,125,476,264.90
  5. Step 5: Solve for x
    x = 37,125,476,264.90/204,820.10
  6. Step 6: Final answer
    x = 181,258.95

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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.