Finding the Fourth Proportional to 139,644.07, 192,712.92 and 75,985.99
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Solution
The fourth proportional to 139,644.07, 192,712.92 and 75,985.99 is: 104,862.90
Step by Step Solution
- Step 1: Write the proportion equation
139,644.07 : 192,712.92 = 75,985.99 : x - Step 2: Convert to fraction form
139,644.07/192,712.92 = 75,985.99/x - Step 3: Cross multiply
139,644.07x = 192,712.92 × 75,985.99 - Step 4: Simplify right side
139,644.07x = 14,643,481,048.43 - Step 5: Solve for x
x = 14,643,481,048.43/139,644.07 - Step 6: Final answer
x = 104,862.90
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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.