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Finding the Fourth Proportional to 186,489.20, 279,733.80 and 61,830.20

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Solution

The fourth proportional to 186,489.20, 279,733.80 and 61,830.20 is: 92,745.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,489.20 : 279,733.80 = 61,830.20 : x
  2. Step 2: Convert to fraction form
    186,489.20/279,733.80 = 61,830.20/x
  3. Step 3: Cross multiply
    186,489.20x = 279,733.80 × 61,830.20
  4. Step 4: Simplify right side
    186,489.20x = 17,295,995,402.09
  5. Step 5: Solve for x
    x = 17,295,995,402.09/186,489.20
  6. Step 6: Final answer
    x = 92,745.29

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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.