Finding the Fourth Proportional to 103,926.21, 143,322.53 and 68,103.21
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Solution
The fourth proportional to 103,926.21, 143,322.53 and 68,103.21 is: 93,919.75
Step by Step Solution
- Step 1: Write the proportion equation
103,926.21 : 143,322.53 = 68,103.21 : x - Step 2: Convert to fraction form
103,926.21/143,322.53 = 68,103.21/x - Step 3: Cross multiply
103,926.21x = 143,322.53 × 68,103.21 - Step 4: Simplify right side
103,926.21x = 9,760,724,017.81 - Step 5: Solve for x
x = 9,760,724,017.81/103,926.21 - Step 6: Final answer
x = 93,919.75
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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.