Finding the Fourth Proportional to 128,608.58, 177,566.45 and 80,284.08
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Solution
The fourth proportional to 128,608.58, 177,566.45 and 80,284.08 is: 110,846.09
Step by Step Solution
- Step 1: Write the proportion equation
128,608.58 : 177,566.45 = 80,284.08 : x - Step 2: Convert to fraction form
128,608.58/177,566.45 = 80,284.08/x - Step 3: Cross multiply
128,608.58x = 177,566.45 × 80,284.08 - Step 4: Simplify right side
128,608.58x = 14,255,758,342.76 - Step 5: Solve for x
x = 14,255,758,342.76/128,608.58 - Step 6: Final answer
x = 110,846.09
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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.