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Finding the Fourth Proportional to 186,138.60, 279,207.90 and 73,845.60

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Solution

The fourth proportional to 186,138.60, 279,207.90 and 73,845.60 is: 110,768.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,138.60 : 279,207.90 = 73,845.60 : x
  2. Step 2: Convert to fraction form
    186,138.60/279,207.90 = 73,845.60/x
  3. Step 3: Cross multiply
    186,138.60x = 279,207.90 × 73,845.60
  4. Step 4: Simplify right side
    186,138.60x = 20,618,274,900.24
  5. Step 5: Solve for x
    x = 20,618,274,900.24/186,138.60
  6. Step 6: Final answer
    x = 110,768.40

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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.