Home / 218,066.19-327,143.22-77,821.17

Finding the Fourth Proportional to 218,066.19, 327,143.22 and 77,821.17

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Solution

The fourth proportional to 218,066.19, 327,143.22 and 77,821.17 is: 116,747.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    218,066.19 : 327,143.22 = 77,821.17 : x
  2. Step 2: Convert to fraction form
    218,066.19/327,143.22 = 77,821.17/x
  3. Step 3: Cross multiply
    218,066.19x = 327,143.22 × 77,821.17
  4. Step 4: Simplify right side
    218,066.19x = 25,458,668,137.97
  5. Step 5: Solve for x
    x = 25,458,668,137.97/218,066.19
  6. Step 6: Final answer
    x = 116,747.43

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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.