Home / 165,448.62-248,087.07-81,171.90

Finding the Fourth Proportional to 165,448.62, 248,087.07 and 81,171.90

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Solution

The fourth proportional to 165,448.62, 248,087.07 and 81,171.90 is: 121,715.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,448.62 : 248,087.07 = 81,171.90 : x
  2. Step 2: Convert to fraction form
    165,448.62/248,087.07 = 81,171.90/x
  3. Step 3: Cross multiply
    165,448.62x = 248,087.07 × 81,171.90
  4. Step 4: Simplify right side
    165,448.62x = 20,137,698,837.33
  5. Step 5: Solve for x
    x = 20,137,698,837.33/165,448.62
  6. Step 6: Final answer
    x = 121,715.73

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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.