Finding the Fourth Proportional to 121,138.69, 181,733.99 and 36,905.63
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Solution
The fourth proportional to 121,138.69, 181,733.99 and 36,905.63 is: 55,366.36
Step by Step Solution
- Step 1: Write the proportion equation
121,138.69 : 181,733.99 = 36,905.63 : x - Step 2: Convert to fraction form
121,138.69/181,733.99 = 36,905.63/x - Step 3: Cross multiply
121,138.69x = 181,733.99 × 36,905.63 - Step 4: Simplify right side
121,138.69x = 6,707,007,939.96 - Step 5: Solve for x
x = 6,707,007,939.96/121,138.69 - Step 6: Final answer
x = 55,366.36
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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.