Finding the Fourth Proportional to 144,633.20, 199,588.31 and 79,220.99
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Solution
The fourth proportional to 144,633.20, 199,588.31 and 79,220.99 is: 109,321.95
Step by Step Solution
- Step 1: Write the proportion equation
144,633.20 : 199,588.31 = 79,220.99 : x - Step 2: Convert to fraction form
144,633.20/199,588.31 = 79,220.99/x - Step 3: Cross multiply
144,633.20x = 199,588.31 × 79,220.99 - Step 4: Simplify right side
144,633.20x = 15,811,583,463.03 - Step 5: Solve for x
x = 15,811,583,463.03/144,633.20 - Step 6: Final answer
x = 109,321.95
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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.