Finding the Fourth Proportional to 129,115.05, 193,683.74 and 35,620.80
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Solution
The fourth proportional to 129,115.05, 193,683.74 and 35,620.80 is: 53,434.28
Step by Step Solution
- Step 1: Write the proportion equation
129,115.05 : 193,683.74 = 35,620.80 : x - Step 2: Convert to fraction form
129,115.05/193,683.74 = 35,620.80/x - Step 3: Cross multiply
129,115.05x = 193,683.74 × 35,620.80 - Step 4: Simplify right side
129,115.05x = 6,899,170,250.00 - Step 5: Solve for x
x = 6,899,170,250.00/129,115.05 - Step 6: Final answer
x = 53,434.28
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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.