Finding the Fourth Proportional to 129,230.62, 194,067.36 and 70,181.62
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Solution
The fourth proportional to 129,230.62, 194,067.36 and 70,181.62 is: 105,392.68
Step by Step Solution
- Step 1: Write the proportion equation
129,230.62 : 194,067.36 = 70,181.62 : x - Step 2: Convert to fraction form
129,230.62/194,067.36 = 70,181.62/x - Step 3: Cross multiply
129,230.62x = 194,067.36 × 70,181.62 - Step 4: Simplify right side
129,230.62x = 13,619,961,713.92 - Step 5: Solve for x
x = 13,619,961,713.92/129,230.62 - Step 6: Final answer
x = 105,392.68
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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.