Finding the Fourth Proportional to 135,435.76, 186,839.28 and 87,704.48
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Solution
The fourth proportional to 135,435.76, 186,839.28 and 87,704.48 is: 120,991.99
Step by Step Solution
- Step 1: Write the proportion equation
135,435.76 : 186,839.28 = 87,704.48 : x - Step 2: Convert to fraction form
135,435.76/186,839.28 = 87,704.48/x - Step 3: Cross multiply
135,435.76x = 186,839.28 × 87,704.48 - Step 4: Simplify right side
135,435.76x = 16,386,641,895.97 - Step 5: Solve for x
x = 16,386,641,895.97/135,435.76 - Step 6: Final answer
x = 120,991.99
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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.