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Finding the Fourth Proportional to 213,801.39, 295,077.21 and 123,139.92

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Solution

The fourth proportional to 213,801.39, 295,077.21 and 123,139.92 is: 169,951.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    213,801.39 : 295,077.21 = 123,139.92 : x
  2. Step 2: Convert to fraction form
    213,801.39/295,077.21 = 123,139.92/x
  3. Step 3: Cross multiply
    213,801.39x = 295,077.21 × 123,139.92
  4. Step 4: Simplify right side
    213,801.39x = 36,335,784,033.22
  5. Step 5: Solve for x
    x = 36,335,784,033.22/213,801.39
  6. Step 6: Final answer
    x = 169,951.11

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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.