Finding the Fourth Proportional to 121,682.20, 182,523.30 and 86,252.80
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Solution
The fourth proportional to 121,682.20, 182,523.30 and 86,252.80 is: 129,379.20
Step by Step Solution
- Step 1: Write the proportion equation
121,682.20 : 182,523.30 = 86,252.80 : x - Step 2: Convert to fraction form
121,682.20/182,523.30 = 86,252.80/x - Step 3: Cross multiply
121,682.20x = 182,523.30 × 86,252.80 - Step 4: Simplify right side
121,682.20x = 15,743,145,690.24 - Step 5: Solve for x
x = 15,743,145,690.24/121,682.20 - Step 6: Final answer
x = 129,379.20
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1.5x scale
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.