Home / 126,878.20-190,179.96-82,536.64

Finding the Fourth Proportional to 126,878.20, 190,179.96 and 82,536.64

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Solution

The fourth proportional to 126,878.20, 190,179.96 and 82,536.64 is: 123,715.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    126,878.20 : 190,179.96 = 82,536.64 : x
  2. Step 2: Convert to fraction form
    126,878.20/190,179.96 = 82,536.64/x
  3. Step 3: Cross multiply
    126,878.20x = 190,179.96 × 82,536.64
  4. Step 4: Simplify right side
    126,878.20x = 15,696,814,893.73
  5. Step 5: Solve for x
    x = 15,696,814,893.73/126,878.20
  6. Step 6: Final answer
    x = 123,715.62

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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.