Finding the Fourth Proportional to 143,942.40, 198,576.27 and 83,477.99
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Solution
The fourth proportional to 143,942.40, 198,576.27 and 83,477.99 is: 115,162.37
Step by Step Solution
- Step 1: Write the proportion equation
143,942.40 : 198,576.27 = 83,477.99 : x - Step 2: Convert to fraction form
143,942.40/198,576.27 = 83,477.99/x - Step 3: Cross multiply
143,942.40x = 198,576.27 × 83,477.99 - Step 4: Simplify right side
143,942.40x = 16,576,748,377.74 - Step 5: Solve for x
x = 16,576,748,377.74/143,942.40 - Step 6: Final answer
x = 115,162.37
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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.