Finding the Fourth Proportional to 128,902.15, 193,362.44 and 53,946.82
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Solution
The fourth proportional to 128,902.15, 193,362.44 and 53,946.82 is: 80,924.09
Step by Step Solution
- Step 1: Write the proportion equation
128,902.15 : 193,362.44 = 53,946.82 : x - Step 2: Convert to fraction form
128,902.15/193,362.44 = 53,946.82/x - Step 3: Cross multiply
128,902.15x = 193,362.44 × 53,946.82 - Step 4: Simplify right side
128,902.15x = 10,431,288,745.44 - Step 5: Solve for x
x = 10,431,288,745.44/128,902.15 - Step 6: Final answer
x = 80,924.09
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.