Finding the Fourth Proportional to 128,514.92, 177,329.50 and 80,734.44
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Solution
The fourth proportional to 128,514.92, 177,329.50 and 80,734.44 is: 111,400.28
Step by Step Solution
- Step 1: Write the proportion equation
128,514.92 : 177,329.50 = 80,734.44 : x - Step 2: Convert to fraction form
128,514.92/177,329.50 = 80,734.44/x - Step 3: Cross multiply
128,514.92x = 177,329.50 × 80,734.44 - Step 4: Simplify right side
128,514.92x = 14,316,597,877.98 - Step 5: Solve for x
x = 14,316,597,877.98/128,514.92 - Step 6: Final answer
x = 111,400.28
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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.