Finding the Fourth Proportional to 129,160.05, 194,031.72 and 76,604.01
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Solution
The fourth proportional to 129,160.05, 194,031.72 and 76,604.01 is: 115,078.99
Step by Step Solution
- Step 1: Write the proportion equation
129,160.05 : 194,031.72 = 76,604.01 : x - Step 2: Convert to fraction form
129,160.05/194,031.72 = 76,604.01/x - Step 3: Cross multiply
129,160.05x = 194,031.72 × 76,604.01 - Step 4: Simplify right side
129,160.05x = 14,863,607,819.20 - Step 5: Solve for x
x = 14,863,607,819.20/129,160.05 - Step 6: Final answer
x = 115,078.99
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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.