Home / 135,275.55-186,645.23-80,805.43

Finding the Fourth Proportional to 135,275.55, 186,645.23 and 80,805.43

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Solution

The fourth proportional to 135,275.55, 186,645.23 and 80,805.43 is: 111,490.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,275.55 : 186,645.23 = 80,805.43 : x
  2. Step 2: Convert to fraction form
    135,275.55/186,645.23 = 80,805.43/x
  3. Step 3: Cross multiply
    135,275.55x = 186,645.23 × 80,805.43
  4. Step 4: Simplify right side
    135,275.55x = 15,081,948,067.60
  5. Step 5: Solve for x
    x = 15,081,948,067.60/135,275.55
  6. Step 6: Final answer
    x = 111,490.57

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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.