Finding the Fourth Proportional to 168,991.20, 253,486.80 and 106,936.80
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Solution
The fourth proportional to 168,991.20, 253,486.80 and 106,936.80 is: 160,405.20
Step by Step Solution
- Step 1: Write the proportion equation
168,991.20 : 253,486.80 = 106,936.80 : x - Step 2: Convert to fraction form
168,991.20/253,486.80 = 106,936.80/x - Step 3: Cross multiply
168,991.20x = 253,486.80 × 106,936.80 - Step 4: Simplify right side
168,991.20x = 27,107,067,234.24 - Step 5: Solve for x
x = 27,107,067,234.24/168,991.20 - Step 6: Final answer
x = 160,405.20
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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.