Finding the Fourth Proportional to 135,391.10, 186,880.21 and 87,647.67
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Solution
The fourth proportional to 135,391.10, 186,880.21 and 87,647.67 is: 120,980.00
Step by Step Solution
- Step 1: Write the proportion equation
135,391.10 : 186,880.21 = 87,647.67 : x - Step 2: Convert to fraction form
135,391.10/186,880.21 = 87,647.67/x - Step 3: Cross multiply
135,391.10x = 186,880.21 × 87,647.67 - Step 4: Simplify right side
135,391.10x = 16,379,615,249.51 - Step 5: Solve for x
x = 16,379,615,249.51/135,391.10 - Step 6: Final answer
x = 120,980.00
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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.