Finding the Fourth Proportional to 115,129.40, 172,694.10 and 36,267.80
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Solution
The fourth proportional to 115,129.40, 172,694.10 and 36,267.80 is: 54,401.70
Step by Step Solution
- Step 1: Write the proportion equation
115,129.40 : 172,694.10 = 36,267.80 : x - Step 2: Convert to fraction form
115,129.40/172,694.10 = 36,267.80/x - Step 3: Cross multiply
115,129.40x = 172,694.10 × 36,267.80 - Step 4: Simplify right side
115,129.40x = 6,263,235,079.98 - Step 5: Solve for x
x = 6,263,235,079.98/115,129.40 - Step 6: Final answer
x = 54,401.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.