Finding the Fourth Proportional to 128,708.20, 193,088.02 and 44,471.40
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Solution
The fourth proportional to 128,708.20, 193,088.02 and 44,471.40 is: 66,715.99
Step by Step Solution
- Step 1: Write the proportion equation
128,708.20 : 193,088.02 = 44,471.40 : x - Step 2: Convert to fraction form
128,708.20/193,088.02 = 44,471.40/x - Step 3: Cross multiply
128,708.20x = 193,088.02 × 44,471.40 - Step 4: Simplify right side
128,708.20x = 8,586,894,572.63 - Step 5: Solve for x
x = 8,586,894,572.63/128,708.20 - Step 6: Final answer
x = 66,715.99
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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.