Finding the Fourth Proportional to 87,568.78, 120,802.97 and 84,173.80
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Solution
The fourth proportional to 87,568.78, 120,802.97 and 84,173.80 is: 116,119.52
Step by Step Solution
- Step 1: Write the proportion equation
87,568.78 : 120,802.97 = 84,173.80 : x - Step 2: Convert to fraction form
87,568.78/120,802.97 = 84,173.80/x - Step 3: Cross multiply
87,568.78x = 120,802.97 × 84,173.80 - Step 4: Simplify right side
87,568.78x = 10,168,445,036.19 - Step 5: Solve for x
x = 10,168,445,036.19/87,568.78 - Step 6: Final answer
x = 116,119.52
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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.