Finding the Fourth Proportional to 122,129.52, 168,535.80 and 68,416.80
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Solution
The fourth proportional to 122,129.52, 168,535.80 and 68,416.80 is: 94,413.54
Step by Step Solution
- Step 1: Write the proportion equation
122,129.52 : 168,535.80 = 68,416.80 : x - Step 2: Convert to fraction form
122,129.52/168,535.80 = 68,416.80/x - Step 3: Cross multiply
122,129.52x = 168,535.80 × 68,416.80 - Step 4: Simplify right side
122,129.52x = 11,530,680,121.44 - Step 5: Solve for x
x = 11,530,680,121.44/122,129.52 - Step 6: Final answer
x = 94,413.54
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.