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Finding the Fourth Proportional to 131,415.60, 196,896.60 and 61,150.80

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Solution

The fourth proportional to 131,415.60, 196,896.60 and 61,150.80 is: 91,620.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,415.60 : 196,896.60 = 61,150.80 : x
  2. Step 2: Convert to fraction form
    131,415.60/196,896.60 = 61,150.80/x
  3. Step 3: Cross multiply
    131,415.60x = 196,896.60 × 61,150.80
  4. Step 4: Simplify right side
    131,415.60x = 12,040,384,607.28
  5. Step 5: Solve for x
    x = 12,040,384,607.28/131,415.60
  6. Step 6: Final answer
    x = 91,620.66

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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.