Finding the Fourth Proportional to 139,847.99, 192,983.51 and 79,410.65
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Solution
The fourth proportional to 139,847.99, 192,983.51 and 79,410.65 is: 109,582.88
Step by Step Solution
- Step 1: Write the proportion equation
139,847.99 : 192,983.51 = 79,410.65 : x - Step 2: Convert to fraction form
139,847.99/192,983.51 = 79,410.65/x - Step 3: Cross multiply
139,847.99x = 192,983.51 × 79,410.65 - Step 4: Simplify right side
139,847.99x = 15,324,944,606.41 - Step 5: Solve for x
x = 15,324,944,606.41/139,847.99 - Step 6: Final answer
x = 109,582.88
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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.