Finding the Fourth Proportional to 126,991.68, 190,519.26 and 89,624.70
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Solution
The fourth proportional to 126,991.68, 190,519.26 and 89,624.70 is: 134,459.45
Step by Step Solution
- Step 1: Write the proportion equation
126,991.68 : 190,519.26 = 89,624.70 : x - Step 2: Convert to fraction form
126,991.68/190,519.26 = 89,624.70/x - Step 3: Cross multiply
126,991.68x = 190,519.26 × 89,624.70 - Step 4: Simplify right side
126,991.68x = 17,075,231,521.72 - Step 5: Solve for x
x = 17,075,231,521.72/126,991.68 - Step 6: Final answer
x = 134,459.45
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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.