Home / 202,821.53-279,882.73-112,172.21

Finding the Fourth Proportional to 202,821.53, 279,882.73 and 112,172.21

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Solution

The fourth proportional to 202,821.53, 279,882.73 and 112,172.21 is: 154,791.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,821.53 : 279,882.73 = 112,172.21 : x
  2. Step 2: Convert to fraction form
    202,821.53/279,882.73 = 112,172.21/x
  3. Step 3: Cross multiply
    202,821.53x = 279,882.73 × 112,172.21
  4. Step 4: Simplify right side
    202,821.53x = 31,395,062,404.66
  5. Step 5: Solve for x
    x = 31,395,062,404.66/202,821.53
  6. Step 6: Final answer
    x = 154,791.57

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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.