Finding the Fourth Proportional to 128,689.94, 193,060.71 and 44,453.18
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Solution
The fourth proportional to 128,689.94, 193,060.71 and 44,453.18 is: 66,688.68
Step by Step Solution
- Step 1: Write the proportion equation
128,689.94 : 193,060.71 = 44,453.18 : x - Step 2: Convert to fraction form
128,689.94/193,060.71 = 44,453.18/x - Step 3: Cross multiply
128,689.94x = 193,060.71 × 44,453.18 - Step 4: Simplify right side
128,689.94x = 8,582,161,527.25 - Step 5: Solve for x
x = 8,582,161,527.25/128,689.94 - Step 6: Final answer
x = 66,688.68
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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.