Home / 165,511.40-248,327.22-81,262.60

Finding the Fourth Proportional to 165,511.40, 248,327.22 and 81,262.60

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Solution

The fourth proportional to 165,511.40, 248,327.22 and 81,262.60 is: 121,923.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,511.40 : 248,327.22 = 81,262.60 : x
  2. Step 2: Convert to fraction form
    165,511.40/248,327.22 = 81,262.60/x
  3. Step 3: Cross multiply
    165,511.40x = 248,327.22 × 81,262.60
  4. Step 4: Simplify right side
    165,511.40x = 20,179,715,547.97
  5. Step 5: Solve for x
    x = 20,179,715,547.97/165,511.40
  6. Step 6: Final answer
    x = 121,923.42

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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.