Home / 186,686.40-279,997.20-68,296.80

Finding the Fourth Proportional to 186,686.40, 279,997.20 and 68,296.80

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Solution

The fourth proportional to 186,686.40, 279,997.20 and 68,296.80 is: 102,433.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,686.40 : 279,997.20 = 68,296.80 : x
  2. Step 2: Convert to fraction form
    186,686.40/279,997.20 = 68,296.80/x
  3. Step 3: Cross multiply
    186,686.40x = 279,997.20 × 68,296.80
  4. Step 4: Simplify right side
    186,686.40x = 19,122,912,768.96
  5. Step 5: Solve for x
    x = 19,122,912,768.96/186,686.40
  6. Step 6: Final answer
    x = 102,433.35

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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.