Finding the Fourth Proportional to 143,772.36, 198,406.62 and 83,378.79
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Solution
The fourth proportional to 143,772.36, 198,406.62 and 83,378.79 is: 115,063.17
Step by Step Solution
- Step 1: Write the proportion equation
143,772.36 : 198,406.62 = 83,378.79 : x - Step 2: Convert to fraction form
143,772.36/198,406.62 = 83,378.79/x - Step 3: Cross multiply
143,772.36x = 198,406.62 × 83,378.79 - Step 4: Simplify right side
143,772.36x = 16,542,903,903.59 - Step 5: Solve for x
x = 16,542,903,903.59/143,772.36 - Step 6: Final answer
x = 115,063.17
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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.