Finding the Fourth Proportional to 121,883.70, 182,469.15 and 86,891.70
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Solution
The fourth proportional to 121,883.70, 182,469.15 and 86,891.70 is: 130,083.47
Step by Step Solution
- Step 1: Write the proportion equation
121,883.70 : 182,469.15 = 86,891.70 : x - Step 2: Convert to fraction form
121,883.70/182,469.15 = 86,891.70/x - Step 3: Cross multiply
121,883.70x = 182,469.15 × 86,891.70 - Step 4: Simplify right side
121,883.70x = 15,855,054,641.06 - Step 5: Solve for x
x = 15,855,054,641.06/121,883.70 - Step 6: Final answer
x = 130,083.47
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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.