Finding the Fourth Proportional to 136,757.08, 188,734.26 and 76,339.60
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Solution
The fourth proportional to 136,757.08, 188,734.26 and 76,339.60 is: 105,353.95
Step by Step Solution
- Step 1: Write the proportion equation
136,757.08 : 188,734.26 = 76,339.60 : x - Step 2: Convert to fraction form
136,757.08/188,734.26 = 76,339.60/x - Step 3: Cross multiply
136,757.08x = 188,734.26 × 76,339.60 - Step 4: Simplify right side
136,757.08x = 14,407,897,914.70 - Step 5: Solve for x
x = 14,407,897,914.70/136,757.08 - Step 6: Final answer
x = 105,353.95
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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.