Finding the Fourth Proportional to 187,639.75, 258,943.67 and 102,758.23
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Solution
The fourth proportional to 187,639.75, 258,943.67 and 102,758.23 is: 141,806.80
Step by Step Solution
- Step 1: Write the proportion equation
187,639.75 : 258,943.67 = 102,758.23 : x - Step 2: Convert to fraction form
187,639.75/258,943.67 = 102,758.23/x - Step 3: Cross multiply
187,639.75x = 258,943.67 × 102,758.23 - Step 4: Simplify right side
187,639.75x = 26,608,593,198.90 - Step 5: Solve for x
x = 26,608,593,198.90/187,639.75 - Step 6: Final answer
x = 141,806.80
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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.