Finding the Fourth Proportional to 135,992.40, 187,638.84 and 82,276.08
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Solution
The fourth proportional to 135,992.40, 187,638.84 and 82,276.08 is: 113,522.43
Step by Step Solution
- Step 1: Write the proportion equation
135,992.40 : 187,638.84 = 82,276.08 : x - Step 2: Convert to fraction form
135,992.40/187,638.84 = 82,276.08/x - Step 3: Cross multiply
135,992.40x = 187,638.84 × 82,276.08 - Step 4: Simplify right side
135,992.40x = 15,438,188,210.95 - Step 5: Solve for x
x = 15,438,188,210.95/135,992.40 - Step 6: Final answer
x = 113,522.43
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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.