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Finding the Fourth Proportional to 202,561.75, 279,535.22 and 113,137.75

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Solution

The fourth proportional to 202,561.75, 279,535.22 and 113,137.75 is: 156,130.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,561.75 : 279,535.22 = 113,137.75 : x
  2. Step 2: Convert to fraction form
    202,561.75/279,535.22 = 113,137.75/x
  3. Step 3: Cross multiply
    202,561.75x = 279,535.22 × 113,137.75
  4. Step 4: Simplify right side
    202,561.75x = 31,625,985,836.56
  5. Step 5: Solve for x
    x = 31,625,985,836.56/202,561.75
  6. Step 6: Final answer
    x = 156,130.10

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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.