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Finding the Fourth Proportional to 186,679.10, 279,968.42 and 68,351.06

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Solution

The fourth proportional to 186,679.10, 279,968.42 and 68,351.06 is: 102,508.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,679.10 : 279,968.42 = 68,351.06 : x
  2. Step 2: Convert to fraction form
    186,679.10/279,968.42 = 68,351.06/x
  3. Step 3: Cross multiply
    186,679.10x = 279,968.42 × 68,351.06
  4. Step 4: Simplify right side
    186,679.10x = 19,136,138,273.53
  5. Step 5: Solve for x
    x = 19,136,138,273.53/186,679.10
  6. Step 6: Final answer
    x = 102,508.20

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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.