Finding the Fourth Proportional to 136,125.38, 187,803.06 and 82,390.70
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Solution
The fourth proportional to 136,125.38, 187,803.06 and 82,390.70 is: 113,668.92
Step by Step Solution
- Step 1: Write the proportion equation
136,125.38 : 187,803.06 = 82,390.70 : x - Step 2: Convert to fraction form
136,125.38/187,803.06 = 82,390.70/x - Step 3: Cross multiply
136,125.38x = 187,803.06 × 82,390.70 - Step 4: Simplify right side
136,125.38x = 15,473,225,575.54 - Step 5: Solve for x
x = 15,473,225,575.54/136,125.38 - Step 6: Final answer
x = 113,668.92
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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.