Finding the Fourth Proportional to 129,970.70, 194,956.05 and 110,943.80
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Solution
The fourth proportional to 129,970.70, 194,956.05 and 110,943.80 is: 166,415.70
Step by Step Solution
- Step 1: Write the proportion equation
129,970.70 : 194,956.05 = 110,943.80 : x - Step 2: Convert to fraction form
129,970.70/194,956.05 = 110,943.80/x - Step 3: Cross multiply
129,970.70x = 194,956.05 × 110,943.80 - Step 4: Simplify right side
129,970.70x = 21,629,165,019.99 - Step 5: Solve for x
x = 21,629,165,019.99/129,970.70 - Step 6: Final answer
x = 166,415.70
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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.