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Finding the Fourth Proportional to 186,996.48, 280,500.39 and 73,139.75

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Solution

The fourth proportional to 186,996.48, 280,500.39 and 73,139.75 is: 109,711.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,996.48 : 280,500.39 = 73,139.75 : x
  2. Step 2: Convert to fraction form
    186,996.48/280,500.39 = 73,139.75/x
  3. Step 3: Cross multiply
    186,996.48x = 280,500.39 × 73,139.75
  4. Step 4: Simplify right side
    186,996.48x = 20,515,726,997.00
  5. Step 5: Solve for x
    x = 20,515,726,997.00/186,996.48
  6. Step 6: Final answer
    x = 109,711.84

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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.