Home / 128,517.10-192,783.84-39,763.16

Finding the Fourth Proportional to 128,517.10, 192,783.84 and 39,763.16

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Solution

The fourth proportional to 128,517.10, 192,783.84 and 39,763.16 is: 59,647.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,517.10 : 192,783.84 = 39,763.16 : x
  2. Step 2: Convert to fraction form
    128,517.10/192,783.84 = 39,763.16/x
  3. Step 3: Cross multiply
    128,517.10x = 192,783.84 × 39,763.16
  4. Step 4: Simplify right side
    128,517.10x = 7,665,694,675.33
  5. Step 5: Solve for x
    x = 7,665,694,675.33/128,517.10
  6. Step 6: Final answer
    x = 59,647.27

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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.