Finding the Fourth Proportional to 129,772.08, 194,658.12 and 31,276.08
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Solution
The fourth proportional to 129,772.08, 194,658.12 and 31,276.08 is: 46,914.12
Step by Step Solution
- Step 1: Write the proportion equation
129,772.08 : 194,658.12 = 31,276.08 : x - Step 2: Convert to fraction form
129,772.08/194,658.12 = 31,276.08/x - Step 3: Cross multiply
129,772.08x = 194,658.12 × 31,276.08 - Step 4: Simplify right side
129,772.08x = 6,088,142,933.77 - Step 5: Solve for x
x = 6,088,142,933.77/129,772.08 - Step 6: Final answer
x = 46,914.12
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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.