Home / 165,340.38-248,112.09-131,405.66

Finding the Fourth Proportional to 165,340.38, 248,112.09 and 131,405.66

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Solution

The fourth proportional to 165,340.38, 248,112.09 and 131,405.66 is: 197,189.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    165,340.38 : 248,112.09 = 131,405.66 : x
  2. Step 2: Convert to fraction form
    165,340.38/248,112.09 = 131,405.66/x
  3. Step 3: Cross multiply
    165,340.38x = 248,112.09 × 131,405.66
  4. Step 4: Simplify right side
    165,340.38x = 32,603,331,699.87
  5. Step 5: Solve for x
    x = 32,603,331,699.87/165,340.38
  6. Step 6: Final answer
    x = 197,189.17

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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.