Finding the Fourth Proportional to 129,052.60, 193,578.90 and 121,276.60
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Solution
The fourth proportional to 129,052.60, 193,578.90 and 121,276.60 is: 181,914.90
Step by Step Solution
- Step 1: Write the proportion equation
129,052.60 : 193,578.90 = 121,276.60 : x - Step 2: Convert to fraction form
129,052.60/193,578.90 = 121,276.60/x - Step 3: Cross multiply
129,052.60x = 193,578.90 × 121,276.60 - Step 4: Simplify right side
129,052.60x = 23,476,590,823.74 - Step 5: Solve for x
x = 23,476,590,823.74/129,052.60 - Step 6: Final answer
x = 181,914.90
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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.