Finding the Fourth Proportional to 121,138.34, 181,713.78 and 36,891.99
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Solution
The fourth proportional to 121,138.34, 181,713.78 and 36,891.99 is: 55,339.90
Step by Step Solution
- Step 1: Write the proportion equation
121,138.34 : 181,713.78 = 36,891.99 : x - Step 2: Convert to fraction form
121,138.34/181,713.78 = 36,891.99/x - Step 3: Cross multiply
121,138.34x = 181,713.78 × 36,891.99 - Step 4: Simplify right side
121,138.34x = 6,703,782,954.62 - Step 5: Solve for x
x = 6,703,782,954.62/121,138.34 - Step 6: Final answer
x = 55,339.90
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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.