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Finding the Fourth Proportional to 186,722.20, 280,081.05 and 131,723.20

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Solution

The fourth proportional to 186,722.20, 280,081.05 and 131,723.20 is: 197,583.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,722.20 : 280,081.05 = 131,723.20 : x
  2. Step 2: Convert to fraction form
    186,722.20/280,081.05 = 131,723.20/x
  3. Step 3: Cross multiply
    186,722.20x = 280,081.05 × 131,723.20
  4. Step 4: Simplify right side
    186,722.20x = 36,893,172,165.36
  5. Step 5: Solve for x
    x = 36,893,172,165.36/186,722.20
  6. Step 6: Final answer
    x = 197,583.21

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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.