Finding the Fourth Proportional to 129,246.21, 193,869.39 and 40,506.63
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Solution
The fourth proportional to 129,246.21, 193,869.39 and 40,506.63 is: 60,759.97
Step by Step Solution
- Step 1: Write the proportion equation
129,246.21 : 193,869.39 = 40,506.63 : x - Step 2: Convert to fraction form
129,246.21/193,869.39 = 40,506.63/x - Step 3: Cross multiply
129,246.21x = 193,869.39 × 40,506.63 - Step 4: Simplify right side
129,246.21x = 7,852,995,547.79 - Step 5: Solve for x
x = 7,852,995,547.79/129,246.21 - Step 6: Final answer
x = 60,759.97
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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.