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Finding the Fourth Proportional to 173,879.30, 260,742.15 and 80,413.70

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Solution

The fourth proportional to 173,879.30, 260,742.15 and 80,413.70 is: 120,585.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,879.30 : 260,742.15 = 80,413.70 : x
  2. Step 2: Convert to fraction form
    173,879.30/260,742.15 = 80,413.70/x
  3. Step 3: Cross multiply
    173,879.30x = 260,742.15 × 80,413.70
  4. Step 4: Simplify right side
    173,879.30x = 20,967,241,027.46
  5. Step 5: Solve for x
    x = 20,967,241,027.46/173,879.30
  6. Step 6: Final answer
    x = 120,585.03

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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.