Finding the Fourth Proportional to 128,845.73, 193,343.96 and 53,959.59
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Solution
The fourth proportional to 128,845.73, 193,343.96 and 53,959.59 is: 80,970.95
Step by Step Solution
- Step 1: Write the proportion equation
128,845.73 : 193,343.96 = 53,959.59 : x - Step 2: Convert to fraction form
128,845.73/193,343.96 = 53,959.59/x - Step 3: Cross multiply
128,845.73x = 193,343.96 × 53,959.59 - Step 4: Simplify right side
128,845.73x = 10,432,760,945.48 - Step 5: Solve for x
x = 10,432,760,945.48/128,845.73 - Step 6: Final answer
x = 80,970.95
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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.