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Finding the Fourth Proportional to 131,955.49, 197,902.88 and 78,662.52

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Solution

The fourth proportional to 131,955.49, 197,902.88 and 78,662.52 is: 117,975.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,955.49 : 197,902.88 = 78,662.52 : x
  2. Step 2: Convert to fraction form
    131,955.49/197,902.88 = 78,662.52/x
  3. Step 3: Cross multiply
    131,955.49x = 197,902.88 × 78,662.52
  4. Step 4: Simplify right side
    131,955.49x = 15,567,538,932.99
  5. Step 5: Solve for x
    x = 15,567,538,932.99/131,955.49
  6. Step 6: Final answer
    x = 117,975.68

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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.