Home / 120,965.28-166,849.20-73,135.68

Finding the Fourth Proportional to 120,965.28, 166,849.20 and 73,135.68

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Solution

The fourth proportional to 120,965.28, 166,849.20 and 73,135.68 is: 100,877.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,965.28 : 166,849.20 = 73,135.68 : x
  2. Step 2: Convert to fraction form
    120,965.28/166,849.20 = 73,135.68/x
  3. Step 3: Cross multiply
    120,965.28x = 166,849.20 × 73,135.68
  4. Step 4: Simplify right side
    120,965.28x = 12,202,629,699.46
  5. Step 5: Solve for x
    x = 12,202,629,699.46/120,965.28
  6. Step 6: Final answer
    x = 100,877.13

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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.