Finding the Fourth Proportional to 128,274.23, 192,432.40 and 39,527.75
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Solution
The fourth proportional to 128,274.23, 192,432.40 and 39,527.75 is: 59,298.11
Step by Step Solution
- Step 1: Write the proportion equation
128,274.23 : 192,432.40 = 39,527.75 : x - Step 2: Convert to fraction form
128,274.23/192,432.40 = 39,527.75/x - Step 3: Cross multiply
128,274.23x = 192,432.40 × 39,527.75 - Step 4: Simplify right side
128,274.23x = 7,606,419,799.10 - Step 5: Solve for x
x = 7,606,419,799.10/128,274.23 - Step 6: Final answer
x = 59,298.11
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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.