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Finding the Fourth Proportional to 136,007.70, 204,078.60 and 61,180.80

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Solution

The fourth proportional to 136,007.70, 204,078.60 and 61,180.80 is: 91,801.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,007.70 : 204,078.60 = 61,180.80 : x
  2. Step 2: Convert to fraction form
    136,007.70/204,078.60 = 61,180.80/x
  3. Step 3: Cross multiply
    136,007.70x = 204,078.60 × 61,180.80
  4. Step 4: Simplify right side
    136,007.70x = 12,485,692,010.88
  5. Step 5: Solve for x
    x = 12,485,692,010.88/136,007.70
  6. Step 6: Final answer
    x = 91,801.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.