Finding the Fourth Proportional to 139,515.23, 192,537.60 and 79,087.05
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Solution
The fourth proportional to 139,515.23, 192,537.60 and 79,087.05 is: 109,143.86
Step by Step Solution
- Step 1: Write the proportion equation
139,515.23 : 192,537.60 = 79,087.05 : x - Step 2: Convert to fraction form
139,515.23/192,537.60 = 79,087.05/x - Step 3: Cross multiply
139,515.23x = 192,537.60 × 79,087.05 - Step 4: Simplify right side
139,515.23x = 15,227,230,798.08 - Step 5: Solve for x
x = 15,227,230,798.08/139,515.23 - Step 6: Final answer
x = 109,143.86
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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.