Finding the Fourth Proportional to 128,908.44, 193,293.84 and 44,646.96
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Solution
The fourth proportional to 128,908.44, 193,293.84 and 44,646.96 is: 66,946.60
Step by Step Solution
- Step 1: Write the proportion equation
128,908.44 : 193,293.84 = 44,646.96 : x - Step 2: Convert to fraction form
128,908.44/193,293.84 = 44,646.96/x - Step 3: Cross multiply
128,908.44x = 193,293.84 × 44,646.96 - Step 4: Simplify right side
128,908.44x = 8,629,982,342.73 - Step 5: Solve for x
x = 8,629,982,342.73/128,908.44 - Step 6: Final answer
x = 66,946.60
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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.