Finding the Fourth Proportional to 191,879.70, 287,560.35 and 128,519.70
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Solution
The fourth proportional to 191,879.70, 287,560.35 and 128,519.70 is: 192,605.94
Step by Step Solution
- Step 1: Write the proportion equation
191,879.70 : 287,560.35 = 128,519.70 : x - Step 2: Convert to fraction form
191,879.70/287,560.35 = 128,519.70/x - Step 3: Cross multiply
191,879.70x = 287,560.35 × 128,519.70 - Step 4: Simplify right side
191,879.70x = 36,957,169,913.90 - Step 5: Solve for x
x = 36,957,169,913.90/191,879.70 - Step 6: Final answer
x = 192,605.94
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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.