Finding the Fourth Proportional to 139,434.21, 192,418.27 and 75,771.99
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Solution
The fourth proportional to 139,434.21, 192,418.27 and 75,771.99 is: 104,564.83
Step by Step Solution
- Step 1: Write the proportion equation
139,434.21 : 192,418.27 = 75,771.99 : x - Step 2: Convert to fraction form
139,434.21/192,418.27 = 75,771.99/x - Step 3: Cross multiply
139,434.21x = 192,418.27 × 75,771.99 - Step 4: Simplify right side
139,434.21x = 14,579,915,040.83 - Step 5: Solve for x
x = 14,579,915,040.83/139,434.21 - Step 6: Final answer
x = 104,564.83
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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.