Home / 135,964.20-203,946.30-86,100.60

Finding the Fourth Proportional to 135,964.20, 203,946.30 and 86,100.60

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Solution

The fourth proportional to 135,964.20, 203,946.30 and 86,100.60 is: 129,150.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,964.20 : 203,946.30 = 86,100.60 : x
  2. Step 2: Convert to fraction form
    135,964.20/203,946.30 = 86,100.60/x
  3. Step 3: Cross multiply
    135,964.20x = 203,946.30 × 86,100.60
  4. Step 4: Simplify right side
    135,964.20x = 17,559,898,797.78
  5. Step 5: Solve for x
    x = 17,559,898,797.78/135,964.20
  6. Step 6: Final answer
    x = 129,150.90

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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.