Finding the Fourth Proportional to 139,235.92, 192,145.74 and 75,573.70
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Solution
The fourth proportional to 139,235.92, 192,145.74 and 75,573.70 is: 104,291.80
Step by Step Solution
- Step 1: Write the proportion equation
139,235.92 : 192,145.74 = 75,573.70 : x - Step 2: Convert to fraction form
139,235.92/192,145.74 = 75,573.70/x - Step 3: Cross multiply
139,235.92x = 192,145.74 × 75,573.70 - Step 4: Simplify right side
139,235.92x = 14,521,164,511.04 - Step 5: Solve for x
x = 14,521,164,511.04/139,235.92 - Step 6: Final answer
x = 104,291.80
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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.