Finding the Fourth Proportional to 128,625.75, 192,938.73 and 53,705.07
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Solution
The fourth proportional to 128,625.75, 192,938.73 and 53,705.07 is: 80,557.65
Step by Step Solution
- Step 1: Write the proportion equation
128,625.75 : 192,938.73 = 53,705.07 : x - Step 2: Convert to fraction form
128,625.75/192,938.73 = 53,705.07/x - Step 3: Cross multiply
128,625.75x = 192,938.73 × 53,705.07 - Step 4: Simplify right side
128,625.75x = 10,361,788,000.36 - Step 5: Solve for x
x = 10,361,788,000.36/128,625.75 - Step 6: Final answer
x = 80,557.65
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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.