Finding the Fourth Proportional to 131,889.69, 181,996.69 and 74,533.99
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Solution
The fourth proportional to 131,889.69, 181,996.69 and 74,533.99 is: 102,850.64
Step by Step Solution
- Step 1: Write the proportion equation
131,889.69 : 181,996.69 = 74,533.99 : x - Step 2: Convert to fraction form
131,889.69/181,996.69 = 74,533.99/x - Step 3: Cross multiply
131,889.69x = 181,996.69 × 74,533.99 - Step 4: Simplify right side
131,889.69x = 13,564,939,472.49 - Step 5: Solve for x
x = 13,564,939,472.49/131,889.69 - Step 6: Final answer
x = 102,850.64
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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.