Home / 201,820.41-278,497.79-120,144.33

Finding the Fourth Proportional to 201,820.41, 278,497.79 and 120,144.33

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Solution

The fourth proportional to 201,820.41, 278,497.79 and 120,144.33 is: 165,790.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,820.41 : 278,497.79 = 120,144.33 : x
  2. Step 2: Convert to fraction form
    201,820.41/278,497.79 = 120,144.33/x
  3. Step 3: Cross multiply
    201,820.41x = 278,497.79 × 120,144.33
  4. Step 4: Simplify right side
    201,820.41x = 33,459,929,785.31
  5. Step 5: Solve for x
    x = 33,459,929,785.31/201,820.41
  6. Step 6: Final answer
    x = 165,790.61

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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.