Home / 83,711.25-126,142.35-69,244.23

Finding the Fourth Proportional to 83,711.25, 126,142.35 and 69,244.23

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Solution

The fourth proportional to 83,711.25, 126,142.35 and 69,244.23 is: 104,342.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,711.25 : 126,142.35 = 69,244.23 : x
  2. Step 2: Convert to fraction form
    83,711.25/126,142.35 = 69,244.23/x
  3. Step 3: Cross multiply
    83,711.25x = 126,142.35 × 69,244.23
  4. Step 4: Simplify right side
    83,711.25x = 8,734,629,896.14
  5. Step 5: Solve for x
    x = 8,734,629,896.14/83,711.25
  6. Step 6: Final answer
    x = 104,342.37

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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.