Finding the Fourth Proportional to 220,147,738.35, 303,804,074.42 and 121,030,172.12
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Solution
The fourth proportional to 220,147,738.35, 303,804,074.42 and 121,030,172.12 is: 167,021,744.99
Step by Step Solution
- Step 1: Write the proportion equation
220,147,738.35 : 303,804,074.42 = 121,030,172.12 : x - Step 2: Convert to fraction form
220,147,738.35/303,804,074.42 = 121,030,172.12/x - Step 3: Cross multiply
220,147,738.35x = 303,804,074.42 × 121,030,172.12 - Step 4: Simplify right side
220,147,738.35x = 36,769,459,415,685,720 - Step 5: Solve for x
x = 36,769,459,415,685,720/220,147,738.35 - Step 6: Final answer
x = 167,021,744.99
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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.