Home / 135,448.74-186,920.66-81,723.38

Finding the Fourth Proportional to 135,448.74, 186,920.66 and 81,723.38

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Solution

The fourth proportional to 135,448.74, 186,920.66 and 81,723.38 is: 112,779.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,448.74 : 186,920.66 = 81,723.38 : x
  2. Step 2: Convert to fraction form
    135,448.74/186,920.66 = 81,723.38/x
  3. Step 3: Cross multiply
    135,448.74x = 186,920.66 × 81,723.38
  4. Step 4: Simplify right side
    135,448.74x = 15,275,787,396.74
  5. Step 5: Solve for x
    x = 15,275,787,396.74/135,448.74
  6. Step 6: Final answer
    x = 112,779.10

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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.