Home / 120,615.11-166,468.78-66,917.43

Finding the Fourth Proportional to 120,615.11, 166,468.78 and 66,917.43

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Solution

The fourth proportional to 120,615.11, 166,468.78 and 66,917.43 is: 92,357.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,615.11 : 166,468.78 = 66,917.43 : x
  2. Step 2: Convert to fraction form
    120,615.11/166,468.78 = 66,917.43/x
  3. Step 3: Cross multiply
    120,615.11x = 166,468.78 × 66,917.43
  4. Step 4: Simplify right side
    120,615.11x = 11,139,662,932.84
  5. Step 5: Solve for x
    x = 11,139,662,932.84/120,615.11
  6. Step 6: Final answer
    x = 92,357.11

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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.