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Finding the Fourth Proportional to 115,413.20, 173,119.80 and 92,862.80

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Solution

The fourth proportional to 115,413.20, 173,119.80 and 92,862.80 is: 139,294.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,413.20 : 173,119.80 = 92,862.80 : x
  2. Step 2: Convert to fraction form
    115,413.20/173,119.80 = 92,862.80/x
  3. Step 3: Cross multiply
    115,413.20x = 173,119.80 × 92,862.80
  4. Step 4: Simplify right side
    115,413.20x = 16,076,389,363.44
  5. Step 5: Solve for x
    x = 16,076,389,363.44/115,413.20
  6. Step 6: Final answer
    x = 139,294.20

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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.