Finding the Fourth Proportional to 135,401.13, 186,859.97 and 81,684.99
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Solution
The fourth proportional to 135,401.13, 186,859.97 and 81,684.99 is: 112,729.15
Step by Step Solution
- Step 1: Write the proportion equation
135,401.13 : 186,859.97 = 81,684.99 : x - Step 2: Convert to fraction form
135,401.13/186,859.97 = 81,684.99/x - Step 3: Cross multiply
135,401.13x = 186,859.97 × 81,684.99 - Step 4: Simplify right side
135,401.13x = 15,263,654,780.85 - Step 5: Solve for x
x = 15,263,654,780.85/135,401.13 - Step 6: Final answer
x = 112,729.15
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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.