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Finding the Fourth Proportional to 202,754.21, 279,788.78 and 112,103.06

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Solution

The fourth proportional to 202,754.21, 279,788.78 and 112,103.06 is: 154,695.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,754.21 : 279,788.78 = 112,103.06 : x
  2. Step 2: Convert to fraction form
    202,754.21/279,788.78 = 112,103.06/x
  3. Step 3: Cross multiply
    202,754.21x = 279,788.78 × 112,103.06
  4. Step 4: Simplify right side
    202,754.21x = 31,365,177,272.98
  5. Step 5: Solve for x
    x = 31,365,177,272.98/202,754.21
  6. Step 6: Final answer
    x = 154,695.57

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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.