Finding the Fourth Proportional to 212,421.77, 293,107.73 and 121,761.05
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Solution
The fourth proportional to 212,421.77, 293,107.73 and 121,761.05 is: 168,010.58
Step by Step Solution
- Step 1: Write the proportion equation
212,421.77 : 293,107.73 = 121,761.05 : x - Step 2: Convert to fraction form
212,421.77/293,107.73 = 121,761.05/x - Step 3: Cross multiply
212,421.77x = 293,107.73 × 121,761.05 - Step 4: Simplify right side
212,421.77x = 35,689,103,502.38 - Step 5: Solve for x
x = 35,689,103,502.38/212,421.77 - Step 6: Final answer
x = 168,010.58
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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.