Finding the Fourth Proportional to 129,548.92, 178,790.26 and 75,830.68
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Solution
The fourth proportional to 129,548.92, 178,790.26 and 75,830.68 is: 104,653.80
Step by Step Solution
- Step 1: Write the proportion equation
129,548.92 : 178,790.26 = 75,830.68 : x - Step 2: Convert to fraction form
129,548.92/178,790.26 = 75,830.68/x - Step 3: Cross multiply
129,548.92x = 178,790.26 × 75,830.68 - Step 4: Simplify right side
129,548.92x = 13,557,786,993.18 - Step 5: Solve for x
x = 13,557,786,993.18/129,548.92 - Step 6: Final answer
x = 104,653.80
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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.