Finding the Fourth Proportional to 128,211.96, 192,336.14 and 39,472.84
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Solution
The fourth proportional to 128,211.96, 192,336.14 and 39,472.84 is: 59,214.86
Step by Step Solution
- Step 1: Write the proportion equation
128,211.96 : 192,336.14 = 39,472.84 : x - Step 2: Convert to fraction form
128,211.96/192,336.14 = 39,472.84/x - Step 3: Cross multiply
128,211.96x = 192,336.14 × 39,472.84 - Step 4: Simplify right side
128,211.96x = 7,592,053,680.44 - Step 5: Solve for x
x = 7,592,053,680.44/128,211.96 - Step 6: Final answer
x = 59,214.86
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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.