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Finding the Fourth Proportional to 140,636.67, 194,078.60 and 76,974.46

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Solution

The fourth proportional to 140,636.67, 194,078.60 and 76,974.46 is: 106,224.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,636.67 : 194,078.60 = 76,974.46 : x
  2. Step 2: Convert to fraction form
    140,636.67/194,078.60 = 76,974.46/x
  3. Step 3: Cross multiply
    140,636.67x = 194,078.60 × 76,974.46
  4. Step 4: Simplify right side
    140,636.67x = 14,939,095,432.56
  5. Step 5: Solve for x
    x = 14,939,095,432.56/140,636.67
  6. Step 6: Final answer
    x = 106,224.75

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.