Home / 186,512.40-279,736.20-68,122.80

Finding the Fourth Proportional to 186,512.40, 279,736.20 and 68,122.80

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Solution

The fourth proportional to 186,512.40, 279,736.20 and 68,122.80 is: 102,172.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,512.40 : 279,736.20 = 68,122.80 : x
  2. Step 2: Convert to fraction form
    186,512.40/279,736.20 = 68,122.80/x
  3. Step 3: Cross multiply
    186,512.40x = 279,736.20 × 68,122.80
  4. Step 4: Simplify right side
    186,512.40x = 19,056,413,205.36
  5. Step 5: Solve for x
    x = 19,056,413,205.36/186,512.40
  6. Step 6: Final answer
    x = 102,172.37

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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.