Home / 201,736.38-278,397-121,165.28

Finding the Fourth Proportional to 201,736.38, 278,397 and 121,165.28

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Solution

The fourth proportional to 201,736.38, 278,397 and 121,165.28 is: 167,208.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,736.38 : 278,397 = 121,165.28 : x
  2. Step 2: Convert to fraction form
    201,736.38/278,397 = 121,165.28/x
  3. Step 3: Cross multiply
    201,736.38x = 278,397 × 121,165.28
  4. Step 4: Simplify right side
    201,736.38x = 33,732,050,456.16
  5. Step 5: Solve for x
    x = 33,732,050,456.16/201,736.38
  6. Step 6: Final answer
    x = 167,208.56

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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.