Finding the Fourth Proportional to 128,951.48, 177,902.22 and 74,467.64
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Solution
The fourth proportional to 128,951.48, 177,902.22 and 74,467.64 is: 102,735.99
Step by Step Solution
- Step 1: Write the proportion equation
128,951.48 : 177,902.22 = 74,467.64 : x - Step 2: Convert to fraction form
128,951.48/177,902.22 = 74,467.64/x - Step 3: Cross multiply
128,951.48x = 177,902.22 × 74,467.64 - Step 4: Simplify right side
128,951.48x = 13,247,958,474.16 - Step 5: Solve for x
x = 13,247,958,474.16/128,951.48 - Step 6: Final answer
x = 102,735.99
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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.