Finding the Fourth Proportional to 201,972.51, 278,722.08 and 117,138.78
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Solution
The fourth proportional to 201,972.51, 278,722.08 and 117,138.78 is: 161,651.53
Step by Step Solution
- Step 1: Write the proportion equation
201,972.51 : 278,722.08 = 117,138.78 : x - Step 2: Convert to fraction form
201,972.51/278,722.08 = 117,138.78/x - Step 3: Cross multiply
201,972.51x = 278,722.08 × 117,138.78 - Step 4: Simplify right side
201,972.51x = 32,649,164,410.26 - Step 5: Solve for x
x = 32,649,164,410.26/201,972.51 - Step 6: Final answer
x = 161,651.53
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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.