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Finding the Fourth Proportional to 174,986.80, 262,480.20 and 86,413.30

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Solution

The fourth proportional to 174,986.80, 262,480.20 and 86,413.30 is: 129,619.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    174,986.80 : 262,480.20 = 86,413.30 : x
  2. Step 2: Convert to fraction form
    174,986.80/262,480.20 = 86,413.30/x
  3. Step 3: Cross multiply
    174,986.80x = 262,480.20 × 86,413.30
  4. Step 4: Simplify right side
    174,986.80x = 22,681,780,266.66
  5. Step 5: Solve for x
    x = 22,681,780,266.66/174,986.80
  6. Step 6: Final answer
    x = 129,619.95

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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.