Finding the Fourth Proportional to 129,161.84, 193,741.52 and 76,533.44
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Solution
The fourth proportional to 129,161.84, 193,741.52 and 76,533.44 is: 114,799.43
Step by Step Solution
- Step 1: Write the proportion equation
129,161.84 : 193,741.52 = 76,533.44 : x - Step 2: Convert to fraction form
129,161.84/193,741.52 = 76,533.44/x - Step 3: Cross multiply
129,161.84x = 193,741.52 × 76,533.44 - Step 4: Simplify right side
129,161.84x = 14,827,704,996.43 - Step 5: Solve for x
x = 14,827,704,996.43/129,161.84 - Step 6: Final answer
x = 114,799.43
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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.