Finding the Fourth Proportional to 139,491.35, 192,495.78 and 75,830.75
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Solution
The fourth proportional to 139,491.35, 192,495.78 and 75,830.75 is: 104,645.19
Step by Step Solution
- Step 1: Write the proportion equation
139,491.35 : 192,495.78 = 75,830.75 : x - Step 2: Convert to fraction form
139,491.35/192,495.78 = 75,830.75/x - Step 3: Cross multiply
139,491.35x = 192,495.78 × 75,830.75 - Step 4: Simplify right side
139,491.35x = 14,597,099,369.24 - Step 5: Solve for x
x = 14,597,099,369.24/139,491.35 - Step 6: Final answer
x = 104,645.19
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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.