Finding the Fourth Proportional to 128,991.99, 193,412.81 and 50,013.96
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Solution
The fourth proportional to 128,991.99, 193,412.81 and 50,013.96 is: 74,991.79
Step by Step Solution
- Step 1: Write the proportion equation
128,991.99 : 193,412.81 = 50,013.96 : x - Step 2: Convert to fraction form
128,991.99/193,412.81 = 50,013.96/x - Step 3: Cross multiply
128,991.99x = 193,412.81 × 50,013.96 - Step 4: Simplify right side
128,991.99x = 9,673,339,942.56 - Step 5: Solve for x
x = 9,673,339,942.56/128,991.99 - Step 6: Final answer
x = 74,991.79
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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.