Home / 165,721.44-248,403.12-81,383.52

Finding the Fourth Proportional to 165,721.44, 248,403.12 and 81,383.52

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Solution

The fourth proportional to 165,721.44, 248,403.12 and 81,383.52 is: 121,987.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,721.44 : 248,403.12 = 81,383.52 : x
  2. Step 2: Convert to fraction form
    165,721.44/248,403.12 = 81,383.52/x
  3. Step 3: Cross multiply
    165,721.44x = 248,403.12 × 81,383.52
  4. Step 4: Simplify right side
    165,721.44x = 20,215,920,284.58
  5. Step 5: Solve for x
    x = 20,215,920,284.58/165,721.44
  6. Step 6: Final answer
    x = 121,987.36

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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.