Finding the Fourth Proportional to 129,982.51, 179,378.85 and 73,393.75
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Solution
The fourth proportional to 129,982.51, 179,378.85 and 73,393.75 is: 101,285.06
Step by Step Solution
- Step 1: Write the proportion equation
129,982.51 : 179,378.85 = 73,393.75 : x - Step 2: Convert to fraction form
129,982.51/179,378.85 = 73,393.75/x - Step 3: Cross multiply
129,982.51x = 179,378.85 × 73,393.75 - Step 4: Simplify right side
129,982.51x = 13,165,286,472.19 - Step 5: Solve for x
x = 13,165,286,472.19/129,982.51 - Step 6: Final answer
x = 101,285.06
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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.