Finding the Fourth Proportional to 129,631.26, 178,887.84 and 75,193.02
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Solution
The fourth proportional to 129,631.26, 178,887.84 and 75,193.02 is: 103,764.45
Step by Step Solution
- Step 1: Write the proportion equation
129,631.26 : 178,887.84 = 75,193.02 : x - Step 2: Convert to fraction form
129,631.26/178,887.84 = 75,193.02/x - Step 3: Cross multiply
129,631.26x = 178,887.84 × 75,193.02 - Step 4: Simplify right side
129,631.26x = 13,451,116,930.88 - Step 5: Solve for x
x = 13,451,116,930.88/129,631.26 - Step 6: Final answer
x = 103,764.45
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.