Finding the Fourth Proportional to 128,021.62, 191,849.40 and 94,020.94
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Solution
The fourth proportional to 128,021.62, 191,849.40 and 94,020.94 is: 140,896.99
Step by Step Solution
- Step 1: Write the proportion equation
128,021.62 : 191,849.40 = 94,020.94 : x - Step 2: Convert to fraction form
128,021.62/191,849.40 = 94,020.94/x - Step 3: Cross multiply
128,021.62x = 191,849.40 × 94,020.94 - Step 4: Simplify right side
128,021.62x = 18,037,860,926.44 - Step 5: Solve for x
x = 18,037,860,926.44/128,021.62 - Step 6: Final answer
x = 140,896.99
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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.