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Finding the Fourth Proportional to 186,878.57, 280,354.78 and 68,550.94

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Solution

The fourth proportional to 186,878.57, 280,354.78 and 68,550.94 is: 102,839.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,878.57 : 280,354.78 = 68,550.94 : x
  2. Step 2: Convert to fraction form
    186,878.57/280,354.78 = 68,550.94/x
  3. Step 3: Cross multiply
    186,878.57x = 280,354.78 × 68,550.94
  4. Step 4: Simplify right side
    186,878.57x = 19,218,582,300.72
  5. Step 5: Solve for x
    x = 19,218,582,300.72/186,878.57
  6. Step 6: Final answer
    x = 102,839.95

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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.