Finding the Fourth Proportional to 128,279.74, 192,422.49 and 44,039.26
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Solution
The fourth proportional to 128,279.74, 192,422.49 and 44,039.26 is: 66,059.88
Step by Step Solution
- Step 1: Write the proportion equation
128,279.74 : 192,422.49 = 44,039.26 : x - Step 2: Convert to fraction form
128,279.74/192,422.49 = 44,039.26/x - Step 3: Cross multiply
128,279.74x = 192,422.49 × 44,039.26 - Step 4: Simplify right side
128,279.74x = 8,474,144,066.96 - Step 5: Solve for x
x = 8,474,144,066.96/128,279.74 - Step 6: Final answer
x = 66,059.88
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1.5x scale
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.