Finding the Fourth Proportional to 129,787.26, 179,106.40 and 70,171.26
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Solution
The fourth proportional to 129,787.26, 179,106.40 and 70,171.26 is: 96,836.33
Step by Step Solution
- Step 1: Write the proportion equation
129,787.26 : 179,106.40 = 70,171.26 : x - Step 2: Convert to fraction form
129,787.26/179,106.40 = 70,171.26/x - Step 3: Cross multiply
129,787.26x = 179,106.40 × 70,171.26 - Step 4: Simplify right side
129,787.26x = 12,568,121,762.06 - Step 5: Solve for x
x = 12,568,121,762.06/129,787.26 - Step 6: Final answer
x = 96,836.33
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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.