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Finding the Fourth Proportional to 202,626.57, 279,623.37 and 111,987.78

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Solution

The fourth proportional to 202,626.57, 279,623.37 and 111,987.78 is: 154,542.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,626.57 : 279,623.37 = 111,987.78 : x
  2. Step 2: Convert to fraction form
    202,626.57/279,623.37 = 111,987.78/x
  3. Step 3: Cross multiply
    202,626.57x = 279,623.37 × 111,987.78
  4. Step 4: Simplify right side
    202,626.57x = 31,314,400,442.42
  5. Step 5: Solve for x
    x = 31,314,400,442.42/202,626.57
  6. Step 6: Final answer
    x = 154,542.42

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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.