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Finding the Fourth Proportional to 186,091.40, 279,201.90 and 80,942.60

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Solution

The fourth proportional to 186,091.40, 279,201.90 and 80,942.60 is: 121,442.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,091.40 : 279,201.90 = 80,942.60 : x
  2. Step 2: Convert to fraction form
    186,091.40/279,201.90 = 80,942.60/x
  3. Step 3: Cross multiply
    186,091.40x = 279,201.90 × 80,942.60
  4. Step 4: Simplify right side
    186,091.40x = 22,599,327,710.94
  5. Step 5: Solve for x
    x = 22,599,327,710.94/186,091.40
  6. Step 6: Final answer
    x = 121,442.09

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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.