Home / 120,406.28-166,163.35-68,722.34

Finding the Fourth Proportional to 120,406.28, 166,163.35 and 68,722.34

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Solution

The fourth proportional to 120,406.28, 166,163.35 and 68,722.34 is: 94,838.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,406.28 : 166,163.35 = 68,722.34 : x
  2. Step 2: Convert to fraction form
    120,406.28/166,163.35 = 68,722.34/x
  3. Step 3: Cross multiply
    120,406.28x = 166,163.35 × 68,722.34
  4. Step 4: Simplify right side
    120,406.28x = 11,419,134,722.09
  5. Step 5: Solve for x
    x = 11,419,134,722.09/120,406.28
  6. Step 6: Final answer
    x = 94,838.37

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.