Finding the Fourth Proportional to 132,939.06, 183,458.09 and 72,509.70
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Solution
The fourth proportional to 132,939.06, 183,458.09 and 72,509.70 is: 100,064.59
Step by Step Solution
- Step 1: Write the proportion equation
132,939.06 : 183,458.09 = 72,509.70 : x - Step 2: Convert to fraction form
132,939.06/183,458.09 = 72,509.70/x - Step 3: Cross multiply
132,939.06x = 183,458.09 × 72,509.70 - Step 4: Simplify right side
132,939.06x = 13,302,491,529.85 - Step 5: Solve for x
x = 13,302,491,529.85/132,939.06 - Step 6: Final answer
x = 100,064.59
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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.