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Finding the Fourth Proportional to 136,500.66, 204,791.37 and 69,987.45

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Solution

The fourth proportional to 136,500.66, 204,791.37 and 69,987.45 is: 105,001.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,500.66 : 204,791.37 = 69,987.45 : x
  2. Step 2: Convert to fraction form
    136,500.66/204,791.37 = 69,987.45/x
  3. Step 3: Cross multiply
    136,500.66x = 204,791.37 × 69,987.45
  4. Step 4: Simplify right side
    136,500.66x = 14,332,825,768.31
  5. Step 5: Solve for x
    x = 14,332,825,768.31/136,500.66
  6. Step 6: Final answer
    x = 105,001.88

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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.