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Finding the Fourth Proportional to 120,698.87, 166,525.94 and 69,704.88

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Solution

The fourth proportional to 120,698.87, 166,525.94 and 69,704.88 is: 96,170.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,698.87 : 166,525.94 = 69,704.88 : x
  2. Step 2: Convert to fraction form
    120,698.87/166,525.94 = 69,704.88/x
  3. Step 3: Cross multiply
    120,698.87x = 166,525.94 × 69,704.88
  4. Step 4: Simplify right side
    120,698.87x = 11,607,670,838.85
  5. Step 5: Solve for x
    x = 11,607,670,838.85/120,698.87
  6. Step 6: Final answer
    x = 96,170.51

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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.