Finding the Fourth Proportional to 231,041.45, 318,816.39 and 129,057.99
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Solution
The fourth proportional to 231,041.45, 318,816.39 and 129,057.99 is: 178,088.41
Step by Step Solution
- Step 1: Write the proportion equation
231,041.45 : 318,816.39 = 129,057.99 : x - Step 2: Convert to fraction form
231,041.45/318,816.39 = 129,057.99/x - Step 3: Cross multiply
231,041.45x = 318,816.39 × 129,057.99 - Step 4: Simplify right side
231,041.45x = 41,145,802,472.46 - Step 5: Solve for x
x = 41,145,802,472.46/231,041.45 - Step 6: Final answer
x = 178,088.41
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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.