Finding the Fourth Proportional to 189,805.16, 261,920.84 and 104,916.75
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Solution
The fourth proportional to 189,805.16, 261,920.84 and 104,916.75 is: 144,779.43
Step by Step Solution
- Step 1: Write the proportion equation
189,805.16 : 261,920.84 = 104,916.75 : x - Step 2: Convert to fraction form
189,805.16/261,920.84 = 104,916.75/x - Step 3: Cross multiply
189,805.16x = 261,920.84 × 104,916.75 - Step 4: Simplify right side
189,805.16x = 27,479,882,765.49 - Step 5: Solve for x
x = 27,479,882,765.49/189,805.16 - Step 6: Final answer
x = 144,779.43
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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.