Finding the Fourth Proportional to 129,929.63, 194,894.44 and 31,433.63
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Solution
The fourth proportional to 129,929.63, 194,894.44 and 31,433.63 is: 47,150.44
Step by Step Solution
- Step 1: Write the proportion equation
129,929.63 : 194,894.44 = 31,433.63 : x - Step 2: Convert to fraction form
129,929.63/194,894.44 = 31,433.63/x - Step 3: Cross multiply
129,929.63x = 194,894.44 × 31,433.63 - Step 4: Simplify right side
129,929.63x = 6,126,238,662.96 - Step 5: Solve for x
x = 6,126,238,662.96/129,929.63 - Step 6: Final answer
x = 47,150.44
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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.