Home / 91,722.20-137,413.20-52,161.80

Finding the Fourth Proportional to 91,722.20, 137,413.20 and 52,161.80

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Solution

The fourth proportional to 91,722.20, 137,413.20 and 52,161.80 is: 78,145.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,722.20 : 137,413.20 = 52,161.80 : x
  2. Step 2: Convert to fraction form
    91,722.20/137,413.20 = 52,161.80/x
  3. Step 3: Cross multiply
    91,722.20x = 137,413.20 × 52,161.80
  4. Step 4: Simplify right side
    91,722.20x = 7,167,719,855.76
  5. Step 5: Solve for x
    x = 7,167,719,855.76/91,722.20
  6. Step 6: Final answer
    x = 78,145.97

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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.