Home / 83,919.53-126,338.67-76,571.21

Finding the Fourth Proportional to 83,919.53, 126,338.67 and 76,571.21

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Solution

The fourth proportional to 83,919.53, 126,338.67 and 76,571.21 is: 115,275.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,919.53 : 126,338.67 = 76,571.21 : x
  2. Step 2: Convert to fraction form
    83,919.53/126,338.67 = 76,571.21/x
  3. Step 3: Cross multiply
    83,919.53x = 126,338.67 × 76,571.21
  4. Step 4: Simplify right side
    83,919.53x = 9,673,904,200.00
  5. Step 5: Solve for x
    x = 9,673,904,200.00/83,919.53
  6. Step 6: Final answer
    x = 115,275.96

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.