Finding the Fourth Proportional to 129,797.62, 179,119.66 and 75,354.84
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Solution
The fourth proportional to 129,797.62, 179,119.66 and 75,354.84 is: 103,989.07
Step by Step Solution
- Step 1: Write the proportion equation
129,797.62 : 179,119.66 = 75,354.84 : x - Step 2: Convert to fraction form
129,797.62/179,119.66 = 75,354.84/x - Step 3: Cross multiply
129,797.62x = 179,119.66 × 75,354.84 - Step 4: Simplify right side
129,797.62x = 13,497,533,320.15 - Step 5: Solve for x
x = 13,497,533,320.15/129,797.62 - Step 6: Final answer
x = 103,989.07
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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.