Finding the Fourth Proportional to 129,126.12, 193,689.18 and 35,631.88
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Solution
The fourth proportional to 129,126.12, 193,689.18 and 35,631.88 is: 53,447.82
Step by Step Solution
- Step 1: Write the proportion equation
129,126.12 : 193,689.18 = 35,631.88 : x - Step 2: Convert to fraction form
129,126.12/193,689.18 = 35,631.88/x - Step 3: Cross multiply
129,126.12x = 193,689.18 × 35,631.88 - Step 4: Simplify right side
129,126.12x = 6,901,509,619.06 - Step 5: Solve for x
x = 6,901,509,619.06/129,126.12 - Step 6: Final answer
x = 53,447.82
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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.