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Finding the Fourth Proportional to 186,668.66, 279,915.42 and 68,257.20

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Solution

The fourth proportional to 186,668.66, 279,915.42 and 68,257.20 is: 102,353.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,668.66 : 279,915.42 = 68,257.20 : x
  2. Step 2: Convert to fraction form
    186,668.66/279,915.42 = 68,257.20/x
  3. Step 3: Cross multiply
    186,668.66x = 279,915.42 × 68,257.20
  4. Step 4: Simplify right side
    186,668.66x = 19,106,242,806.02
  5. Step 5: Solve for x
    x = 19,106,242,806.02/186,668.66
  6. Step 6: Final answer
    x = 102,353.78

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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.