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Finding the Fourth Proportional to 203,179.68, 280,367.28 and 117,115.20

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Solution

The fourth proportional to 203,179.68, 280,367.28 and 117,115.20 is: 161,607.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,179.68 : 280,367.28 = 117,115.20 : x
  2. Step 2: Convert to fraction form
    203,179.68/280,367.28 = 117,115.20/x
  3. Step 3: Cross multiply
    203,179.68x = 280,367.28 × 117,115.20
  4. Step 4: Simplify right side
    203,179.68x = 32,835,270,070.66
  5. Step 5: Solve for x
    x = 32,835,270,070.66/203,179.68
  6. Step 6: Final answer
    x = 161,607.06

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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.