Finding the Fourth Proportional to 188,921.70, 282,726.45 and 129,872.70
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Solution
The fourth proportional to 188,921.70, 282,726.45 and 129,872.70 is: 194,358.02
Step by Step Solution
- Step 1: Write the proportion equation
188,921.70 : 282,726.45 = 129,872.70 : x - Step 2: Convert to fraction form
188,921.70/282,726.45 = 129,872.70/x - Step 3: Cross multiply
188,921.70x = 282,726.45 × 129,872.70 - Step 4: Simplify right side
188,921.70x = 36,718,447,422.92 - Step 5: Solve for x
x = 36,718,447,422.92/188,921.70 - Step 6: Final answer
x = 194,358.02
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.