Finding the Fourth Proportional to 129,980.13, 179,375.84 and 73,391.91
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Solution
The fourth proportional to 129,980.13, 179,375.84 and 73,391.91 is: 101,282.68
Step by Step Solution
- Step 1: Write the proportion equation
129,980.13 : 179,375.84 = 73,391.91 : x - Step 2: Convert to fraction form
129,980.13/179,375.84 = 73,391.91/x - Step 3: Cross multiply
129,980.13x = 179,375.84 × 73,391.91 - Step 4: Simplify right side
129,980.13x = 13,164,735,505.45 - Step 5: Solve for x
x = 13,164,735,505.45/129,980.13 - Step 6: Final answer
x = 101,282.68
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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.