Finding the Fourth Proportional to 129,504.06, 178,699.77 and 75,055.92
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Solution
The fourth proportional to 129,504.06, 178,699.77 and 75,055.92 is: 103,567.99
Step by Step Solution
- Step 1: Write the proportion equation
129,504.06 : 178,699.77 = 75,055.92 : x - Step 2: Convert to fraction form
129,504.06/178,699.77 = 75,055.92/x - Step 3: Cross multiply
129,504.06x = 178,699.77 × 75,055.92 - Step 4: Simplify right side
129,504.06x = 13,412,475,641.14 - Step 5: Solve for x
x = 13,412,475,641.14/129,504.06 - Step 6: Final answer
x = 103,567.99
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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.