Finding the Fourth Proportional to 129,476.67, 178,694.84 and 72,899.07
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Solution
The fourth proportional to 129,476.67, 178,694.84 and 72,899.07 is: 100,610.31
Step by Step Solution
- Step 1: Write the proportion equation
129,476.67 : 178,694.84 = 72,899.07 : x - Step 2: Convert to fraction form
129,476.67/178,694.84 = 72,899.07/x - Step 3: Cross multiply
129,476.67x = 178,694.84 × 72,899.07 - Step 4: Simplify right side
129,476.67x = 13,026,687,285.30 - Step 5: Solve for x
x = 13,026,687,285.30/129,476.67 - Step 6: Final answer
x = 100,610.31
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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.