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Finding the Fourth Proportional to 131,652.80, 197,479.20 and 84,413.60

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Solution

The fourth proportional to 131,652.80, 197,479.20 and 84,413.60 is: 126,620.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,652.80 : 197,479.20 = 84,413.60 : x
  2. Step 2: Convert to fraction form
    131,652.80/197,479.20 = 84,413.60/x
  3. Step 3: Cross multiply
    131,652.80x = 197,479.20 × 84,413.60
  4. Step 4: Simplify right side
    131,652.80x = 16,669,930,197.12
  5. Step 5: Solve for x
    x = 16,669,930,197.12/131,652.80
  6. Step 6: Final answer
    x = 126,620.40

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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.