Finding the Fourth Proportional to 143,988.96, 198,699.84 and 80,325.12
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Solution
The fourth proportional to 143,988.96, 198,699.84 and 80,325.12 is: 110,845.92
Step by Step Solution
- Step 1: Write the proportion equation
143,988.96 : 198,699.84 = 80,325.12 : x - Step 2: Convert to fraction form
143,988.96/198,699.84 = 80,325.12/x - Step 3: Cross multiply
143,988.96x = 198,699.84 × 80,325.12 - Step 4: Simplify right side
143,988.96x = 15,960,588,491.98 - Step 5: Solve for x
x = 15,960,588,491.98/143,988.96 - Step 6: Final answer
x = 110,845.92
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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.