Finding the Fourth Proportional to 135,471.54, 186,910.28 and 87,649.14
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Solution
The fourth proportional to 135,471.54, 186,910.28 and 87,649.14 is: 120,929.65
Step by Step Solution
- Step 1: Write the proportion equation
135,471.54 : 186,910.28 = 87,649.14 : x - Step 2: Convert to fraction form
135,471.54/186,910.28 = 87,649.14/x - Step 3: Cross multiply
135,471.54x = 186,910.28 × 87,649.14 - Step 4: Simplify right side
135,471.54x = 16,382,525,299.16 - Step 5: Solve for x
x = 16,382,525,299.16/135,471.54 - Step 6: Final answer
x = 120,929.65
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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.