Finding the Fourth Proportional to 129,698.82, 179,067.65 and 81,366.99
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Solution
The fourth proportional to 129,698.82, 179,067.65 and 81,366.99 is: 112,338.69
Step by Step Solution
- Step 1: Write the proportion equation
129,698.82 : 179,067.65 = 81,366.99 : x - Step 2: Convert to fraction form
129,698.82/179,067.65 = 81,366.99/x - Step 3: Cross multiply
129,698.82x = 179,067.65 × 81,366.99 - Step 4: Simplify right side
129,698.82x = 14,570,195,280.04 - Step 5: Solve for x
x = 14,570,195,280.04/129,698.82 - Step 6: Final answer
x = 112,338.69
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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.