Finding the Fourth Proportional to 189,873.19, 262,240.10 and 129,338.65
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Solution
The fourth proportional to 189,873.19, 262,240.10 and 129,338.65 is: 178,633.86
Step by Step Solution
- Step 1: Write the proportion equation
189,873.19 : 262,240.10 = 129,338.65 : x - Step 2: Convert to fraction form
189,873.19/262,240.10 = 129,338.65/x - Step 3: Cross multiply
189,873.19x = 262,240.10 × 129,338.65 - Step 4: Simplify right side
189,873.19x = 33,917,780,509.87 - Step 5: Solve for x
x = 33,917,780,509.87/189,873.19 - Step 6: Final answer
x = 178,633.86
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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.