Finding the Fourth Proportional to 129,619.20, 194,428.80 and 110,592.30
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Solution
The fourth proportional to 129,619.20, 194,428.80 and 110,592.30 is: 165,888.45
Step by Step Solution
- Step 1: Write the proportion equation
129,619.20 : 194,428.80 = 110,592.30 : x - Step 2: Convert to fraction form
129,619.20/194,428.80 = 110,592.30/x - Step 3: Cross multiply
129,619.20x = 194,428.80 × 110,592.30 - Step 4: Simplify right side
129,619.20x = 21,502,328,178.24 - Step 5: Solve for x
x = 21,502,328,178.24/129,619.20 - Step 6: Final answer
x = 165,888.45
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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.