Home / 120,507.53-166,185.68-72,101.70

Finding the Fourth Proportional to 120,507.53, 166,185.68 and 72,101.70

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Solution

The fourth proportional to 120,507.53, 166,185.68 and 72,101.70 is: 99,431.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,507.53 : 166,185.68 = 72,101.70 : x
  2. Step 2: Convert to fraction form
    120,507.53/166,185.68 = 72,101.70/x
  3. Step 3: Cross multiply
    120,507.53x = 166,185.68 × 72,101.70
  4. Step 4: Simplify right side
    120,507.53x = 11,982,270,150.54
  5. Step 5: Solve for x
    x = 11,982,270,150.54/120,507.53
  6. Step 6: Final answer
    x = 99,431.71

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1.5x scale

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.