Finding the Fourth Proportional to 189,021.20, 260,849.11 and 104,138.26
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Solution
The fourth proportional to 189,021.20, 260,849.11 and 104,138.26 is: 143,710.72
Step by Step Solution
- Step 1: Write the proportion equation
189,021.20 : 260,849.11 = 104,138.26 : x - Step 2: Convert to fraction form
189,021.20/260,849.11 = 104,138.26/x - Step 3: Cross multiply
189,021.20x = 260,849.11 × 104,138.26 - Step 4: Simplify right side
189,021.20x = 27,164,371,720.74 - Step 5: Solve for x
x = 27,164,371,720.74/189,021.20 - Step 6: Final answer
x = 143,710.72
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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.