Home / 128,072.44-192,137.23-39,334.90

Finding the Fourth Proportional to 128,072.44, 192,137.23 and 39,334.90

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Solution

The fourth proportional to 128,072.44, 192,137.23 and 39,334.90 is: 59,011.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,072.44 : 192,137.23 = 39,334.90 : x
  2. Step 2: Convert to fraction form
    128,072.44/192,137.23 = 39,334.90/x
  3. Step 3: Cross multiply
    128,072.44x = 192,137.23 × 39,334.90
  4. Step 4: Simplify right side
    128,072.44x = 7,557,698,728.33
  5. Step 5: Solve for x
    x = 7,557,698,728.33/128,072.44
  6. Step 6: Final answer
    x = 59,011.12

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1.5x scale

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.