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Finding the Fourth Proportional to 131,360, 197,067.66 and 42,606.58

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Solution

The fourth proportional to 131,360, 197,067.66 and 42,606.58 is: 63,918.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,360 : 197,067.66 = 42,606.58 : x
  2. Step 2: Convert to fraction form
    131,360/197,067.66 = 42,606.58/x
  3. Step 3: Cross multiply
    131,360x = 197,067.66 × 42,606.58
  4. Step 4: Simplify right side
    131,360x = 8,396,379,021.20
  5. Step 5: Solve for x
    x = 8,396,379,021.20/131,360
  6. Step 6: Final answer
    x = 63,918.84

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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.