Finding the Fourth Proportional to 129,821.12, 179,161.44 and 73,211.84
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Solution
The fourth proportional to 129,821.12, 179,161.44 and 73,211.84 is: 101,037.02
Step by Step Solution
- Step 1: Write the proportion equation
129,821.12 : 179,161.44 = 73,211.84 : x - Step 2: Convert to fraction form
129,821.12/179,161.44 = 73,211.84/x - Step 3: Cross multiply
129,821.12x = 179,161.44 × 73,211.84 - Step 4: Simplify right side
129,821.12x = 13,116,738,679.45 - Step 5: Solve for x
x = 13,116,738,679.45/129,821.12 - Step 6: Final answer
x = 101,037.02
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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.