Finding the Fourth Proportional to 129,556.62, 193,895.64 and 79,668.06
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Solution
The fourth proportional to 129,556.62, 193,895.64 and 79,668.06 is: 119,231.96
Step by Step Solution
- Step 1: Write the proportion equation
129,556.62 : 193,895.64 = 79,668.06 : x - Step 2: Convert to fraction form
129,556.62/193,895.64 = 79,668.06/x - Step 3: Cross multiply
129,556.62x = 193,895.64 × 79,668.06 - Step 4: Simplify right side
129,556.62x = 15,447,289,481.26 - Step 5: Solve for x
x = 15,447,289,481.26/129,556.62 - Step 6: Final answer
x = 119,231.96
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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.