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Finding the Fourth Proportional to 186,267.78, 279,233.19 and 67,911.43

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Solution

The fourth proportional to 186,267.78, 279,233.19 and 67,911.43 is: 101,805.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,267.78 : 279,233.19 = 67,911.43 : x
  2. Step 2: Convert to fraction form
    186,267.78/279,233.19 = 67,911.43/x
  3. Step 3: Cross multiply
    186,267.78x = 279,233.19 × 67,911.43
  4. Step 4: Simplify right side
    186,267.78x = 18,963,125,236.36
  5. Step 5: Solve for x
    x = 18,963,125,236.36/186,267.78
  6. Step 6: Final answer
    x = 101,805.72

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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.