Home / 128,396.10-192,190.50-88,179.60

Finding the Fourth Proportional to 128,396.10, 192,190.50 and 88,179.60

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Solution

The fourth proportional to 128,396.10, 192,190.50 and 88,179.60 is: 131,992.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,396.10 : 192,190.50 = 88,179.60 : x
  2. Step 2: Convert to fraction form
    128,396.10/192,190.50 = 88,179.60/x
  3. Step 3: Cross multiply
    128,396.10x = 192,190.50 × 88,179.60
  4. Step 4: Simplify right side
    128,396.10x = 16,947,281,413.80
  5. Step 5: Solve for x
    x = 16,947,281,413.80/128,396.10
  6. Step 6: Final answer
    x = 131,992.18

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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.