Finding the Fourth Proportional to 129,617.54, 194,169.69 and 61,135.31
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Solution
The fourth proportional to 129,617.54, 194,169.69 and 61,135.31 is: 91,581.92
Step by Step Solution
- Step 1: Write the proportion equation
129,617.54 : 194,169.69 = 61,135.31 : x - Step 2: Convert to fraction form
129,617.54/194,169.69 = 61,135.31/x - Step 3: Cross multiply
129,617.54x = 194,169.69 × 61,135.31 - Step 4: Simplify right side
129,617.54x = 11,870,623,219.91 - Step 5: Solve for x
x = 11,870,623,219.91/129,617.54 - Step 6: Final answer
x = 91,581.92
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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.