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Finding the Fourth Proportional to 186,775.65, 279,906.50 and 80,031.82

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Solution

The fourth proportional to 186,775.65, 279,906.50 and 80,031.82 is: 119,937.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,775.65 : 279,906.50 = 80,031.82 : x
  2. Step 2: Convert to fraction form
    186,775.65/279,906.50 = 80,031.82/x
  3. Step 3: Cross multiply
    186,775.65x = 279,906.50 × 80,031.82
  4. Step 4: Simplify right side
    186,775.65x = 22,401,427,099.57
  5. Step 5: Solve for x
    x = 22,401,427,099.57/186,775.65
  6. Step 6: Final answer
    x = 119,937.62

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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.