Home / 120,845.77-166,771.90-82,685.36

Finding the Fourth Proportional to 120,845.77, 166,771.90 and 82,685.36

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Solution

The fourth proportional to 120,845.77, 166,771.90 and 82,685.36 is: 114,109.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,845.77 : 166,771.90 = 82,685.36 : x
  2. Step 2: Convert to fraction form
    120,845.77/166,771.90 = 82,685.36/x
  3. Step 3: Cross multiply
    120,845.77x = 166,771.90 × 82,685.36
  4. Step 4: Simplify right side
    120,845.77x = 13,789,593,706.47
  5. Step 5: Solve for x
    x = 13,789,593,706.47/120,845.77
  6. Step 6: Final answer
    x = 114,109.03

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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.