Home / 204,102.20-306,080.40-70,986.80

Finding the Fourth Proportional to 204,102.20, 306,080.40 and 70,986.80

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Solution

The fourth proportional to 204,102.20, 306,080.40 and 70,986.80 is: 106,454.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    204,102.20 : 306,080.40 = 70,986.80 : x
  2. Step 2: Convert to fraction form
    204,102.20/306,080.40 = 70,986.80/x
  3. Step 3: Cross multiply
    204,102.20x = 306,080.40 × 70,986.80
  4. Step 4: Simplify right side
    204,102.20x = 21,727,668,138.72
  5. Step 5: Solve for x
    x = 21,727,668,138.72/204,102.20
  6. Step 6: Final answer
    x = 106,454.85

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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.