Finding the Fourth Proportional to 129,421.06, 194,163.78 and 102,867.23
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Solution
The fourth proportional to 129,421.06, 194,163.78 and 102,867.23 is: 154,326.43
Step by Step Solution
- Step 1: Write the proportion equation
129,421.06 : 194,163.78 = 102,867.23 : x - Step 2: Convert to fraction form
129,421.06/194,163.78 = 102,867.23/x - Step 3: Cross multiply
129,421.06x = 194,163.78 × 102,867.23 - Step 4: Simplify right side
129,421.06x = 19,973,090,214.93 - Step 5: Solve for x
x = 19,973,090,214.93/129,421.06 - Step 6: Final answer
x = 154,326.43
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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.