Finding the Fourth Proportional to 128,481.70, 192,611.73 and 61,830.14
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Solution
The fourth proportional to 128,481.70, 192,611.73 and 61,830.14 is: 92,691.88
Step by Step Solution
- Step 1: Write the proportion equation
128,481.70 : 192,611.73 = 61,830.14 : x - Step 2: Convert to fraction form
128,481.70/192,611.73 = 61,830.14/x - Step 3: Cross multiply
128,481.70x = 192,611.73 × 61,830.14 - Step 4: Simplify right side
128,481.70x = 11,909,210,231.54 - Step 5: Solve for x
x = 11,909,210,231.54/128,481.70 - Step 6: Final answer
x = 92,691.88
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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.