Finding the Fourth Proportional to 124,216.20, 186,348.60 and 53,138.70
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Solution
The fourth proportional to 124,216.20, 186,348.60 and 53,138.70 is: 79,718.45
Step by Step Solution
- Step 1: Write the proportion equation
124,216.20 : 186,348.60 = 53,138.70 : x - Step 2: Convert to fraction form
124,216.20/186,348.60 = 53,138.70/x - Step 3: Cross multiply
124,216.20x = 186,348.60 × 53,138.70 - Step 4: Simplify right side
124,216.20x = 9,902,322,350.82 - Step 5: Solve for x
x = 9,902,322,350.82/124,216.20 - Step 6: Final answer
x = 79,718.45
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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.