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Finding the Fourth Proportional to 202,203, 279,040.14 and 112,779

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Solution

The fourth proportional to 202,203, 279,040.14 and 112,779 is: 155,635.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,203 : 279,040.14 = 112,779 : x
  2. Step 2: Convert to fraction form
    202,203/279,040.14 = 112,779/x
  3. Step 3: Cross multiply
    202,203x = 279,040.14 × 112,779
  4. Step 4: Simplify right side
    202,203x = 31,469,867,949.06
  5. Step 5: Solve for x
    x = 31,469,867,949.06/202,203
  6. Step 6: Final answer
    x = 155,635.02

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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.