Home / 120,384.80-166,158.66-80,100.26

Finding the Fourth Proportional to 120,384.80, 166,158.66 and 80,100.26

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Solution

The fourth proportional to 120,384.80, 166,158.66 and 80,100.26 is: 110,556.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,384.80 : 166,158.66 = 80,100.26 : x
  2. Step 2: Convert to fraction form
    120,384.80/166,158.66 = 80,100.26/x
  3. Step 3: Cross multiply
    120,384.80x = 166,158.66 × 80,100.26
  4. Step 4: Simplify right side
    120,384.80x = 13,309,351,867.25
  5. Step 5: Solve for x
    x = 13,309,351,867.25/120,384.80
  6. Step 6: Final answer
    x = 110,556.75

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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.