Finding the Fourth Proportional to 135,786.05, 203,675.99 and 79,980.17
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Solution
The fourth proportional to 135,786.05, 203,675.99 and 79,980.17 is: 119,968.43
Step by Step Solution
- Step 1: Write the proportion equation
135,786.05 : 203,675.99 = 79,980.17 : x - Step 2: Convert to fraction form
135,786.05/203,675.99 = 79,980.17/x - Step 3: Cross multiply
135,786.05x = 203,675.99 × 79,980.17 - Step 4: Simplify right side
135,786.05x = 16,290,039,486.69 - Step 5: Solve for x
x = 16,290,039,486.69/135,786.05 - Step 6: Final answer
x = 119,968.43
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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.