Home / 201,910.30-278,636.61-121,339.06

Finding the Fourth Proportional to 201,910.30, 278,636.61 and 121,339.06

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Solution

The fourth proportional to 201,910.30, 278,636.61 and 121,339.06 is: 167,448.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,910.30 : 278,636.61 = 121,339.06 : x
  2. Step 2: Convert to fraction form
    201,910.30/278,636.61 = 121,339.06/x
  3. Step 3: Cross multiply
    201,910.30x = 278,636.61 × 121,339.06
  4. Step 4: Simplify right side
    201,910.30x = 33,809,504,338.99
  5. Step 5: Solve for x
    x = 33,809,504,338.99/201,910.30
  6. Step 6: Final answer
    x = 167,448.14

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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.