Finding the Fourth Proportional to 129,828.60, 194,723.70 and 36,343.80
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Solution
The fourth proportional to 129,828.60, 194,723.70 and 36,343.80 is: 54,510.33
Step by Step Solution
- Step 1: Write the proportion equation
129,828.60 : 194,723.70 = 36,343.80 : x - Step 2: Convert to fraction form
129,828.60/194,723.70 = 36,343.80/x - Step 3: Cross multiply
129,828.60x = 194,723.70 × 36,343.80 - Step 4: Simplify right side
129,828.60x = 7,076,999,208.06 - Step 5: Solve for x
x = 7,076,999,208.06/129,828.60 - Step 6: Final answer
x = 54,510.33
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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.