Home / 120,351.63-166,090.43-66,636.64

Finding the Fourth Proportional to 120,351.63, 166,090.43 and 66,636.64

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Solution

The fourth proportional to 120,351.63, 166,090.43 and 66,636.64 is: 91,961.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,351.63 : 166,090.43 = 66,636.64 : x
  2. Step 2: Convert to fraction form
    120,351.63/166,090.43 = 66,636.64/x
  3. Step 3: Cross multiply
    120,351.63x = 166,090.43 × 66,636.64
  4. Step 4: Simplify right side
    120,351.63x = 11,067,707,942.72
  5. Step 5: Solve for x
    x = 11,067,707,942.72/120,351.63
  6. Step 6: Final answer
    x = 91,961.43

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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.