Finding the Fourth Proportional to 129,930.70, 194,604.45 and 106,602.70
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Solution
The fourth proportional to 129,930.70, 194,604.45 and 106,602.70 is: 159,664.80
Step by Step Solution
- Step 1: Write the proportion equation
129,930.70 : 194,604.45 = 106,602.70 : x - Step 2: Convert to fraction form
129,930.70/194,604.45 = 106,602.70/x - Step 3: Cross multiply
129,930.70x = 194,604.45 × 106,602.70 - Step 4: Simplify right side
129,930.70x = 20,745,359,802.02 - Step 5: Solve for x
x = 20,745,359,802.02/129,930.70 - Step 6: Final answer
x = 159,664.80
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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.