Home / 186,443.10-279,761.85-81,272.70

Finding the Fourth Proportional to 186,443.10, 279,761.85 and 81,272.70

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Solution

The fourth proportional to 186,443.10, 279,761.85 and 81,272.70 is: 121,951.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,443.10 : 279,761.85 = 81,272.70 : x
  2. Step 2: Convert to fraction form
    186,443.10/279,761.85 = 81,272.70/x
  3. Step 3: Cross multiply
    186,443.10x = 279,761.85 × 81,272.70
  4. Step 4: Simplify right side
    186,443.10x = 22,737,000,906.50
  5. Step 5: Solve for x
    x = 22,737,000,906.50/186,443.10
  6. Step 6: Final answer
    x = 121,951.42

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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.