Home / 138,194.64-207,311.40-68,074.56

Finding the Fourth Proportional to 138,194.64, 207,311.40 and 68,074.56

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Solution

The fourth proportional to 138,194.64, 207,311.40 and 68,074.56 is: 102,121.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    138,194.64 : 207,311.40 = 68,074.56 : x
  2. Step 2: Convert to fraction form
    138,194.64/207,311.40 = 68,074.56/x
  3. Step 3: Cross multiply
    138,194.64x = 207,311.40 × 68,074.56
  4. Step 4: Simplify right side
    138,194.64x = 14,112,632,337.98
  5. Step 5: Solve for x
    x = 14,112,632,337.98/138,194.64
  6. Step 6: Final answer
    x = 102,121.42

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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.