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Finding the Fourth Proportional to 128,992.50, 193,413.56 and 50,014.46

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Solution

The fourth proportional to 128,992.50, 193,413.56 and 50,014.46 is: 74,992.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,992.50 : 193,413.56 = 50,014.46 : x
  2. Step 2: Convert to fraction form
    128,992.50/193,413.56 = 50,014.46/x
  3. Step 3: Cross multiply
    128,992.50x = 193,413.56 × 50,014.46
  4. Step 4: Simplify right side
    128,992.50x = 9,673,473,793.01
  5. Step 5: Solve for x
    x = 9,673,473,793.01/128,992.50
  6. Step 6: Final answer
    x = 74,992.53

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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.