Finding the Fourth Proportional to 139,195.09, 192,089.75 and 75,532.88
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Solution
The fourth proportional to 139,195.09, 192,089.75 and 75,532.88 is: 104,235.66
Step by Step Solution
- Step 1: Write the proportion equation
139,195.09 : 192,089.75 = 75,532.88 : x - Step 2: Convert to fraction form
139,195.09/192,089.75 = 75,532.88/x - Step 3: Cross multiply
139,195.09x = 192,089.75 × 75,532.88 - Step 4: Simplify right side
139,195.09x = 14,509,092,138.54 - Step 5: Solve for x
x = 14,509,092,138.54/139,195.09 - Step 6: Final answer
x = 104,235.66
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1.5x scale
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.