Finding the Fourth Proportional to 179,936.72, 248,064.36 and 128,990.96
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Solution
The fourth proportional to 179,936.72, 248,064.36 and 128,990.96 is: 177,829.52
Step by Step Solution
- Step 1: Write the proportion equation
179,936.72 : 248,064.36 = 128,990.96 : x - Step 2: Convert to fraction form
179,936.72/248,064.36 = 128,990.96/x - Step 3: Cross multiply
179,936.72x = 248,064.36 × 128,990.96 - Step 4: Simplify right side
179,936.72x = 31,998,059,938.19 - Step 5: Solve for x
x = 31,998,059,938.19/179,936.72 - Step 6: Final answer
x = 177,829.52
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.