Finding the Fourth Proportional to 129,542.09, 194,369.42 and 45,362.63
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Solution
The fourth proportional to 129,542.09, 194,369.42 and 45,362.63 is: 68,063.66
Step by Step Solution
- Step 1: Write the proportion equation
129,542.09 : 194,369.42 = 45,362.63 : x - Step 2: Convert to fraction form
129,542.09/194,369.42 = 45,362.63/x - Step 3: Cross multiply
129,542.09x = 194,369.42 × 45,362.63 - Step 4: Simplify right side
129,542.09x = 8,817,108,682.10 - Step 5: Solve for x
x = 8,817,108,682.10/129,542.09 - Step 6: Final answer
x = 68,063.66
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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.