Finding the Fourth Proportional to 129,907.31, 194,873.38 and 36,412.79
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Solution
The fourth proportional to 129,907.31, 194,873.38 and 36,412.79 is: 54,622.66
Step by Step Solution
- Step 1: Write the proportion equation
129,907.31 : 194,873.38 = 36,412.79 : x - Step 2: Convert to fraction form
129,907.31/194,873.38 = 36,412.79/x - Step 3: Cross multiply
129,907.31x = 194,873.38 × 36,412.79 - Step 4: Simplify right side
129,907.31x = 7,095,882,397.13 - Step 5: Solve for x
x = 7,095,882,397.13/129,907.31 - Step 6: Final answer
x = 54,622.66
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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.