Home / 123,906.20-170,990.74-67,317.56

Finding the Fourth Proportional to 123,906.20, 170,990.74 and 67,317.56

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Solution

The fourth proportional to 123,906.20, 170,990.74 and 67,317.56 is: 92,898.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    123,906.20 : 170,990.74 = 67,317.56 : x
  2. Step 2: Convert to fraction form
    123,906.20/170,990.74 = 67,317.56/x
  3. Step 3: Cross multiply
    123,906.20x = 170,990.74 × 67,317.56
  4. Step 4: Simplify right side
    123,906.20x = 11,510,679,399.39
  5. Step 5: Solve for x
    x = 11,510,679,399.39/123,906.20
  6. Step 6: Final answer
    x = 92,898.33

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.