Home / 84,968.20-127,452.30-80,129.80

Finding the Fourth Proportional to 84,968.20, 127,452.30 and 80,129.80

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Solution

The fourth proportional to 84,968.20, 127,452.30 and 80,129.80 is: 120,194.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,968.20 : 127,452.30 = 80,129.80 : x
  2. Step 2: Convert to fraction form
    84,968.20/127,452.30 = 80,129.80/x
  3. Step 3: Cross multiply
    84,968.20x = 127,452.30 × 80,129.80
  4. Step 4: Simplify right side
    84,968.20x = 10,212,727,308.54
  5. Step 5: Solve for x
    x = 10,212,727,308.54/84,968.20
  6. Step 6: Final answer
    x = 120,194.70

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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.