Finding the Fourth Proportional to 129,940.36, 179,320.61 and 76,264.09
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Solution
The fourth proportional to 129,940.36, 179,320.61 and 76,264.09 is: 105,246.15
Step by Step Solution
- Step 1: Write the proportion equation
129,940.36 : 179,320.61 = 76,264.09 : x - Step 2: Convert to fraction form
129,940.36/179,320.61 = 76,264.09/x - Step 3: Cross multiply
129,940.36x = 179,320.61 × 76,264.09 - Step 4: Simplify right side
129,940.36x = 13,675,722,882.25 - Step 5: Solve for x
x = 13,675,722,882.25/129,940.36 - Step 6: Final answer
x = 105,246.15
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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.