Finding the Fourth Proportional to 122,181.94, 168,611.07 and 74,435.26
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Solution
The fourth proportional to 122,181.94, 168,611.07 and 74,435.26 is: 102,720.65
Step by Step Solution
- Step 1: Write the proportion equation
122,181.94 : 168,611.07 = 74,435.26 : x - Step 2: Convert to fraction form
122,181.94/168,611.07 = 74,435.26/x - Step 3: Cross multiply
122,181.94x = 168,611.07 × 74,435.26 - Step 4: Simplify right side
122,181.94x = 12,550,608,834.33 - Step 5: Solve for x
x = 12,550,608,834.33/122,181.94 - Step 6: Final answer
x = 102,720.65
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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.