Finding the Fourth Proportional to 129,649.63, 194,474.44 and 31,153.63
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Solution
The fourth proportional to 129,649.63, 194,474.44 and 31,153.63 is: 46,730.44
Step by Step Solution
- Step 1: Write the proportion equation
129,649.63 : 194,474.44 = 31,153.63 : x - Step 2: Convert to fraction form
129,649.63/194,474.44 = 31,153.63/x - Step 3: Cross multiply
129,649.63x = 194,474.44 × 31,153.63 - Step 4: Simplify right side
129,649.63x = 6,058,583,775.85 - Step 5: Solve for x
x = 6,058,583,775.85/129,649.63 - Step 6: Final answer
x = 46,730.44
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1.5x scale
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.