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Finding the Fourth Proportional to 203,039.58, 280,072.04 and 130,418.03

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Solution

The fourth proportional to 203,039.58, 280,072.04 and 130,418.03 is: 179,898.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,039.58 : 280,072.04 = 130,418.03 : x
  2. Step 2: Convert to fraction form
    203,039.58/280,072.04 = 130,418.03/x
  3. Step 3: Cross multiply
    203,039.58x = 280,072.04 × 130,418.03
  4. Step 4: Simplify right side
    203,039.58x = 36,526,441,662.43
  5. Step 5: Solve for x
    x = 36,526,441,662.43/203,039.58
  6. Step 6: Final answer
    x = 179,898.13

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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.