Home / 120,540.47-166,351.32-68,862.11

Finding the Fourth Proportional to 120,540.47, 166,351.32 and 68,862.11

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Solution

The fourth proportional to 120,540.47, 166,351.32 and 68,862.11 is: 95,032.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,540.47 : 166,351.32 = 68,862.11 : x
  2. Step 2: Convert to fraction form
    120,540.47/166,351.32 = 68,862.11/x
  3. Step 3: Cross multiply
    120,540.47x = 166,351.32 × 68,862.11
  4. Step 4: Simplify right side
    120,540.47x = 11,455,302,896.49
  5. Step 5: Solve for x
    x = 11,455,302,896.49/120,540.47
  6. Step 6: Final answer
    x = 95,032.84

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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.