Finding the Fourth Proportional to 129,864.70, 194,643.45 and 54,984.70
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Solution
The fourth proportional to 129,864.70, 194,643.45 and 54,984.70 is: 82,412.02
Step by Step Solution
- Step 1: Write the proportion equation
129,864.70 : 194,643.45 = 54,984.70 : x - Step 2: Convert to fraction form
129,864.70/194,643.45 = 54,984.70/x - Step 3: Cross multiply
129,864.70x = 194,643.45 × 54,984.70 - Step 4: Simplify right side
129,864.70x = 10,702,411,705.22 - Step 5: Solve for x
x = 10,702,411,705.22/129,864.70 - Step 6: Final answer
x = 82,412.02
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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.