Finding the Fourth Proportional to 135,696.21, 187,283.19 and 75,286.29
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Solution
The fourth proportional to 135,696.21, 187,283.19 and 75,286.29 is: 103,907.52
Step by Step Solution
- Step 1: Write the proportion equation
135,696.21 : 187,283.19 = 75,286.29 : x - Step 2: Convert to fraction form
135,696.21/187,283.19 = 75,286.29/x - Step 3: Cross multiply
135,696.21x = 187,283.19 × 75,286.29 - Step 4: Simplify right side
135,696.21x = 14,099,856,554.47 - Step 5: Solve for x
x = 14,099,856,554.47/135,696.21 - Step 6: Final answer
x = 103,907.52
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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.