Finding the Fourth Proportional to 143,681.19, 198,286.19 and 80,018.99
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Solution
The fourth proportional to 143,681.19, 198,286.19 and 80,018.99 is: 110,429.62
Step by Step Solution
- Step 1: Write the proportion equation
143,681.19 : 198,286.19 = 80,018.99 : x - Step 2: Convert to fraction form
143,681.19/198,286.19 = 80,018.99/x - Step 3: Cross multiply
143,681.19x = 198,286.19 × 80,018.99 - Step 4: Simplify right side
143,681.19x = 15,866,659,863.36 - Step 5: Solve for x
x = 15,866,659,863.36/143,681.19 - Step 6: Final answer
x = 110,429.62
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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.