Finding the Fourth Proportional to 103,021.19, 155,233.79 and 84,711.41
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Solution
The fourth proportional to 103,021.19, 155,233.79 and 84,711.41 is: 127,644.35
Step by Step Solution
- Step 1: Write the proportion equation
103,021.19 : 155,233.79 = 84,711.41 : x - Step 2: Convert to fraction form
103,021.19/155,233.79 = 84,711.41/x - Step 3: Cross multiply
103,021.19x = 155,233.79 × 84,711.41 - Step 4: Simplify right side
103,021.19x = 13,150,073,230.54 - Step 5: Solve for x
x = 13,150,073,230.54/103,021.19 - Step 6: Final answer
x = 127,644.35
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Why These Related Problems?
These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.