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Finding the Fourth Proportional to 203,179.54, 280,386.98 and 117,137.92

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Solution

The fourth proportional to 203,179.54, 280,386.98 and 117,137.92 is: 161,649.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,179.54 : 280,386.98 = 117,137.92 : x
  2. Step 2: Convert to fraction form
    203,179.54/280,386.98 = 117,137.92/x
  3. Step 3: Cross multiply
    203,179.54x = 280,386.98 × 117,137.92
  4. Step 4: Simplify right side
    203,179.54x = 32,843,947,632.28
  5. Step 5: Solve for x
    x = 32,843,947,632.28/203,179.54
  6. Step 6: Final answer
    x = 161,649.88

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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.