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Finding the Fourth Proportional to 186,393.42, 279,522.09 and 68,029.74

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Solution

The fourth proportional to 186,393.42, 279,522.09 and 68,029.74 is: 102,019.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,393.42 : 279,522.09 = 68,029.74 : x
  2. Step 2: Convert to fraction form
    186,393.42/279,522.09 = 68,029.74/x
  3. Step 3: Cross multiply
    186,393.42x = 279,522.09 × 68,029.74
  4. Step 4: Simplify right side
    186,393.42x = 19,015,815,106.96
  5. Step 5: Solve for x
    x = 19,015,815,106.96/186,393.42
  6. Step 6: Final answer
    x = 102,019.78

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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.