Home / 70,760.20-106,140.58-67,212.80

Finding the Fourth Proportional to 70,760.20, 106,140.58 and 67,212.80

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Solution

The fourth proportional to 70,760.20, 106,140.58 and 67,212.80 is: 100,819.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,760.20 : 106,140.58 = 67,212.80 : x
  2. Step 2: Convert to fraction form
    70,760.20/106,140.58 = 67,212.80/x
  3. Step 3: Cross multiply
    70,760.20x = 106,140.58 × 67,212.80
  4. Step 4: Simplify right side
    70,760.20x = 7,134,005,575.42
  5. Step 5: Solve for x
    x = 7,134,005,575.42/70,760.20
  6. Step 6: Final answer
    x = 100,819.47

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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.