Finding the Fourth Proportional to 132,546.81, 182,913.18 and 78,830.65
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Solution
The fourth proportional to 132,546.81, 182,913.18 and 78,830.65 is: 108,785.45
Step by Step Solution
- Step 1: Write the proportion equation
132,546.81 : 182,913.18 = 78,830.65 : x - Step 2: Convert to fraction form
132,546.81/182,913.18 = 78,830.65/x - Step 3: Cross multiply
132,546.81x = 182,913.18 × 78,830.65 - Step 4: Simplify right side
132,546.81x = 14,419,164,872.97 - Step 5: Solve for x
x = 14,419,164,872.97/132,546.81 - Step 6: Final answer
x = 108,785.45
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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.