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Finding the Fourth Proportional to 132,920.20, 199,311.90 and 39,413.80

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Solution

The fourth proportional to 132,920.20, 199,311.90 and 39,413.80 is: 59,100.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    132,920.20 : 199,311.90 = 39,413.80 : x
  2. Step 2: Convert to fraction form
    132,920.20/199,311.90 = 39,413.80/x
  3. Step 3: Cross multiply
    132,920.20x = 199,311.90 × 39,413.80
  4. Step 4: Simplify right side
    132,920.20x = 7,855,639,364.22
  5. Step 5: Solve for x
    x = 7,855,639,364.22/132,920.20
  6. Step 6: Final answer
    x = 59,100.42

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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.