Finding the Fourth Proportional to 213,063.17, 319,716.86 and 86,680.08
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Solution
The fourth proportional to 213,063.17, 319,716.86 and 86,680.08 is: 130,069.80
Step by Step Solution
- Step 1: Write the proportion equation
213,063.17 : 319,716.86 = 86,680.08 : x - Step 2: Convert to fraction form
213,063.17/319,716.86 = 86,680.08/x - Step 3: Cross multiply
213,063.17x = 319,716.86 × 86,680.08 - Step 4: Simplify right side
213,063.17x = 27,713,082,568.75 - Step 5: Solve for x
x = 27,713,082,568.75/213,063.17 - Step 6: Final answer
x = 130,069.80
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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.