Finding the Fourth Proportional to 119,839.68, 165,377.79 and 66,126.96
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Solution
The fourth proportional to 119,839.68, 165,377.79 and 66,126.96 is: 91,254.67
Step by Step Solution
- Step 1: Write the proportion equation
119,839.68 : 165,377.79 = 66,126.96 : x - Step 2: Convert to fraction form
119,839.68/165,377.79 = 66,126.96/x - Step 3: Cross multiply
119,839.68x = 165,377.79 × 66,126.96 - Step 4: Simplify right side
119,839.68x = 10,935,930,504.22 - Step 5: Solve for x
x = 10,935,930,504.22/119,839.68 - Step 6: Final answer
x = 91,254.67
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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.