Finding the Fourth Proportional to 139,563.21, 192,593.11 and 79,139.37
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Solution
The fourth proportional to 139,563.21, 192,593.11 and 79,139.37 is: 109,209.99
Step by Step Solution
- Step 1: Write the proportion equation
139,563.21 : 192,593.11 = 79,139.37 : x - Step 2: Convert to fraction form
139,563.21/192,593.11 = 79,139.37/x - Step 3: Cross multiply
139,563.21x = 192,593.11 × 79,139.37 - Step 4: Simplify right side
139,563.21x = 15,241,697,391.74 - Step 5: Solve for x
x = 15,241,697,391.74/139,563.21 - Step 6: Final answer
x = 109,209.99
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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.