Finding the Fourth Proportional to 128,365.40, 192,029.70 and 111,027.80
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Solution
The fourth proportional to 128,365.40, 192,029.70 and 111,027.80 is: 166,093.32
Step by Step Solution
- Step 1: Write the proportion equation
128,365.40 : 192,029.70 = 111,027.80 : x - Step 2: Convert to fraction form
128,365.40/192,029.70 = 111,027.80/x - Step 3: Cross multiply
128,365.40x = 192,029.70 × 111,027.80 - Step 4: Simplify right side
128,365.40x = 21,320,635,125.66 - Step 5: Solve for x
x = 21,320,635,125.66/128,365.40 - Step 6: Final answer
x = 166,093.32
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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.