Finding the Fourth Proportional to 128,184.68, 176,744.81 and 87,372.97
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Solution
The fourth proportional to 128,184.68, 176,744.81 and 87,372.97 is: 120,472.43
Step by Step Solution
- Step 1: Write the proportion equation
128,184.68 : 176,744.81 = 87,372.97 : x - Step 2: Convert to fraction form
128,184.68/176,744.81 = 87,372.97/x - Step 3: Cross multiply
128,184.68x = 176,744.81 × 87,372.97 - Step 4: Simplify right side
128,184.68x = 15,442,718,758.36 - Step 5: Solve for x
x = 15,442,718,758.36/128,184.68 - Step 6: Final answer
x = 120,472.43
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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.