Finding the Fourth Proportional to 129,979.13, 194,968.69 and 46,873.13
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Solution
The fourth proportional to 129,979.13, 194,968.69 and 46,873.13 is: 70,309.69
Step by Step Solution
- Step 1: Write the proportion equation
129,979.13 : 194,968.69 = 46,873.13 : x - Step 2: Convert to fraction form
129,979.13/194,968.69 = 46,873.13/x - Step 3: Cross multiply
129,979.13x = 194,968.69 × 46,873.13 - Step 4: Simplify right side
129,979.13x = 9,138,791,660.27 - Step 5: Solve for x
x = 9,138,791,660.27/129,979.13 - Step 6: Final answer
x = 70,309.69
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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.