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Finding the Fourth Proportional to 201,620.94, 278,179.47 and 130,042.86

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Solution

The fourth proportional to 201,620.94, 278,179.47 and 130,042.86 is: 179,422.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,620.94 : 278,179.47 = 130,042.86 : x
  2. Step 2: Convert to fraction form
    201,620.94/278,179.47 = 130,042.86/x
  3. Step 3: Cross multiply
    201,620.94x = 278,179.47 × 130,042.86
  4. Step 4: Simplify right side
    201,620.94x = 36,175,253,872.08
  5. Step 5: Solve for x
    x = 36,175,253,872.08/201,620.94
  6. Step 6: Final answer
    x = 179,422.11

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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.