Finding the Fourth Proportional to 129,645.75, 194,468.64 and 31,149.75
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Solution
The fourth proportional to 129,645.75, 194,468.64 and 31,149.75 is: 46,724.63
Step by Step Solution
- Step 1: Write the proportion equation
129,645.75 : 194,468.64 = 31,149.75 : x - Step 2: Convert to fraction form
129,645.75/194,468.64 = 31,149.75/x - Step 3: Cross multiply
129,645.75x = 194,468.64 × 31,149.75 - Step 4: Simplify right side
129,645.75x = 6,057,649,518.84 - Step 5: Solve for x
x = 6,057,649,518.84/129,645.75 - Step 6: Final answer
x = 46,724.63
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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.