Finding the Fourth Proportional to 135,483.68, 186,845.64 and 87,687.20
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Solution
The fourth proportional to 135,483.68, 186,845.64 and 87,687.20 is: 120,929.48
Step by Step Solution
- Step 1: Write the proportion equation
135,483.68 : 186,845.64 = 87,687.20 : x - Step 2: Convert to fraction form
135,483.68/186,845.64 = 87,687.20/x - Step 3: Cross multiply
135,483.68x = 186,845.64 × 87,687.20 - Step 4: Simplify right side
135,483.68x = 16,383,971,003.81 - Step 5: Solve for x
x = 16,383,971,003.81/135,483.68 - Step 6: Final answer
x = 120,929.48
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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.