Finding the Fourth Proportional to 128,542.80, 192,583.80 and 110,110.80
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Solution
The fourth proportional to 128,542.80, 192,583.80 and 110,110.80 is: 164,968.84
Step by Step Solution
- Step 1: Write the proportion equation
128,542.80 : 192,583.80 = 110,110.80 : x - Step 2: Convert to fraction form
128,542.80/192,583.80 = 110,110.80/x - Step 3: Cross multiply
128,542.80x = 192,583.80 × 110,110.80 - Step 4: Simplify right side
128,542.80x = 21,205,556,285.04 - Step 5: Solve for x
x = 21,205,556,285.04/128,542.80 - Step 6: Final answer
x = 164,968.84
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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.