Finding the Fourth Proportional to 128,935.29, 193,478.24 and 54,049.68
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Solution
The fourth proportional to 128,935.29, 193,478.24 and 54,049.68 is: 81,106.09
Step by Step Solution
- Step 1: Write the proportion equation
128,935.29 : 193,478.24 = 54,049.68 : x - Step 2: Convert to fraction form
128,935.29/193,478.24 = 54,049.68/x - Step 3: Cross multiply
128,935.29x = 193,478.24 × 54,049.68 - Step 4: Simplify right side
128,935.29x = 10,457,436,688.71 - Step 5: Solve for x
x = 10,457,436,688.71/128,935.29 - Step 6: Final answer
x = 81,106.09
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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.