Finding the Fourth Proportional to 135,890.44, 203,728.38 and 85,864.96
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Solution
The fourth proportional to 135,890.44, 203,728.38 and 85,864.96 is: 128,729.65
Step by Step Solution
- Step 1: Write the proportion equation
135,890.44 : 203,728.38 = 85,864.96 : x - Step 2: Convert to fraction form
135,890.44/203,728.38 = 85,864.96/x - Step 3: Cross multiply
135,890.44x = 203,728.38 × 85,864.96 - Step 4: Simplify right side
135,890.44x = 17,493,129,199.56 - Step 5: Solve for x
x = 17,493,129,199.56/135,890.44 - Step 6: Final answer
x = 128,729.65
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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.