Home / 128,912.04-193,401.60-40,167

Finding the Fourth Proportional to 128,912.04, 193,401.60 and 40,167

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Solution

The fourth proportional to 128,912.04, 193,401.60 and 40,167 is: 60,260.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,912.04 : 193,401.60 = 40,167 : x
  2. Step 2: Convert to fraction form
    128,912.04/193,401.60 = 40,167/x
  3. Step 3: Cross multiply
    128,912.04x = 193,401.60 × 40,167
  4. Step 4: Simplify right side
    128,912.04x = 7,768,362,067.20
  5. Step 5: Solve for x
    x = 7,768,362,067.20/128,912.04
  6. Step 6: Final answer
    x = 60,260.95

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.