Home / 121,982.28-183,182.82-74,874

Finding the Fourth Proportional to 121,982.28, 183,182.82 and 74,874

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Solution

The fourth proportional to 121,982.28, 183,182.82 and 74,874 is: 112,439.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,982.28 : 183,182.82 = 74,874 : x
  2. Step 2: Convert to fraction form
    121,982.28/183,182.82 = 74,874/x
  3. Step 3: Cross multiply
    121,982.28x = 183,182.82 × 74,874
  4. Step 4: Simplify right side
    121,982.28x = 13,715,630,464.68
  5. Step 5: Solve for x
    x = 13,715,630,464.68/121,982.28
  6. Step 6: Final answer
    x = 112,439.53

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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.