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Finding the Fourth Proportional to 186,042.58, 279,057.54 and 80,861.56

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Solution

The fourth proportional to 186,042.58, 279,057.54 and 80,861.56 is: 121,289.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,042.58 : 279,057.54 = 80,861.56 : x
  2. Step 2: Convert to fraction form
    186,042.58/279,057.54 = 80,861.56/x
  3. Step 3: Cross multiply
    186,042.58x = 279,057.54 × 80,861.56
  4. Step 4: Simplify right side
    186,042.58x = 22,565,028,014.16
  5. Step 5: Solve for x
    x = 22,565,028,014.16/186,042.58
  6. Step 6: Final answer
    x = 121,289.59

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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.