Finding the Fourth Proportional to 129,208.68, 193,813.02 and 40,469.13
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Solution
The fourth proportional to 129,208.68, 193,813.02 and 40,469.13 is: 60,703.70
Step by Step Solution
- Step 1: Write the proportion equation
129,208.68 : 193,813.02 = 40,469.13 : x - Step 2: Convert to fraction form
129,208.68/193,813.02 = 40,469.13/x - Step 3: Cross multiply
129,208.68x = 193,813.02 × 40,469.13 - Step 4: Simplify right side
129,208.68x = 7,843,444,302.07 - Step 5: Solve for x
x = 7,843,444,302.07/129,208.68 - Step 6: Final answer
x = 60,703.70
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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.