Home / 128,237.25-192,252.11-53,413.60

Finding the Fourth Proportional to 128,237.25, 192,252.11 and 53,413.60

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Solution

The fourth proportional to 128,237.25, 192,252.11 and 53,413.60 is: 80,077.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,237.25 : 192,252.11 = 53,413.60 : x
  2. Step 2: Convert to fraction form
    128,237.25/192,252.11 = 53,413.60/x
  3. Step 3: Cross multiply
    128,237.25x = 192,252.11 × 53,413.60
  4. Step 4: Simplify right side
    128,237.25x = 10,268,877,606.41
  5. Step 5: Solve for x
    x = 10,268,877,606.41/128,237.25
  6. Step 6: Final answer
    x = 80,077.18

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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.