Finding the Fourth Proportional to 131,351.81, 181,265.70 and 74,763.19
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Solution
The fourth proportional to 131,351.81, 181,265.70 and 74,763.19 is: 103,173.31
Step by Step Solution
- Step 1: Write the proportion equation
131,351.81 : 181,265.70 = 74,763.19 : x - Step 2: Convert to fraction form
131,351.81/181,265.70 = 74,763.19/x - Step 3: Cross multiply
131,351.81x = 181,265.70 × 74,763.19 - Step 4: Simplify right side
131,351.81x = 13,552,001,796.78 - Step 5: Solve for x
x = 13,552,001,796.78/131,351.81 - Step 6: Final answer
x = 103,173.31
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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.