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Finding the Fourth Proportional to 186,747.60, 280,121.40 and 68,370.96

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Solution

The fourth proportional to 186,747.60, 280,121.40 and 68,370.96 is: 102,556.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,747.60 : 280,121.40 = 68,370.96 : x
  2. Step 2: Convert to fraction form
    186,747.60/280,121.40 = 68,370.96/x
  3. Step 3: Cross multiply
    186,747.60x = 280,121.40 × 68,370.96
  4. Step 4: Simplify right side
    186,747.60x = 19,152,169,034.54
  5. Step 5: Solve for x
    x = 19,152,169,034.54/186,747.60
  6. Step 6: Final answer
    x = 102,556.44

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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.