Finding the Fourth Proportional to 123,069.97, 184,990.30 and 81,218.99
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Solution
The fourth proportional to 123,069.97, 184,990.30 and 81,218.99 is: 122,082.79
Step by Step Solution
- Step 1: Write the proportion equation
123,069.97 : 184,990.30 = 81,218.99 : x - Step 2: Convert to fraction form
123,069.97/184,990.30 = 81,218.99/x - Step 3: Cross multiply
123,069.97x = 184,990.30 × 81,218.99 - Step 4: Simplify right side
123,069.97x = 15,024,724,891.51 - Step 5: Solve for x
x = 15,024,724,891.51/123,069.97 - Step 6: Final answer
x = 122,082.79
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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.