Finding the Fourth Proportional to 190,639.90, 263,082.27 and 105,756.99
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Solution
The fourth proportional to 190,639.90, 263,082.27 and 105,756.99 is: 145,944.21
Step by Step Solution
- Step 1: Write the proportion equation
190,639.90 : 263,082.27 = 105,756.99 : x - Step 2: Convert to fraction form
190,639.90/263,082.27 = 105,756.99/x - Step 3: Cross multiply
190,639.90x = 263,082.27 × 105,756.99 - Step 4: Simplify right side
190,639.90x = 27,822,788,997.57 - Step 5: Solve for x
x = 27,822,788,997.57/190,639.90 - Step 6: Final answer
x = 145,944.21
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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.