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Finding the Fourth Proportional to 203,512.63, 280,850.93 and 112,872.55

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Solution

The fourth proportional to 203,512.63, 280,850.93 and 112,872.55 is: 155,766.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,512.63 : 280,850.93 = 112,872.55 : x
  2. Step 2: Convert to fraction form
    203,512.63/280,850.93 = 112,872.55/x
  3. Step 3: Cross multiply
    203,512.63x = 280,850.93 × 112,872.55
  4. Step 4: Simplify right side
    203,512.63x = 31,700,359,516.90
  5. Step 5: Solve for x
    x = 31,700,359,516.90/203,512.63
  6. Step 6: Final answer
    x = 155,766.06

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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.