Finding the Fourth Proportional to 128,272.44, 177,065.46 and 114,819.96
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Solution
The fourth proportional to 128,272.44, 177,065.46 and 114,819.96 is: 158,495.85
Step by Step Solution
- Step 1: Write the proportion equation
128,272.44 : 177,065.46 = 114,819.96 : x - Step 2: Convert to fraction form
128,272.44/177,065.46 = 114,819.96/x - Step 3: Cross multiply
128,272.44x = 177,065.46 × 114,819.96 - Step 4: Simplify right side
128,272.44x = 20,330,649,034.58 - Step 5: Solve for x
x = 20,330,649,034.58/128,272.44 - Step 6: Final answer
x = 158,495.85
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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.