Finding the Fourth Proportional to 143,980,874.14, 198,699,244.85 and 81,259,163.03
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Solution
The fourth proportional to 143,980,874.14, 198,699,244.85 and 81,259,163.03 is: 112,140,827.23
Step by Step Solution
- Step 1: Write the proportion equation
143,980,874.14 : 198,699,244.85 = 81,259,163.03 : x - Step 2: Convert to fraction form
143,980,874.14/198,699,244.85 = 81,259,163.03/x - Step 3: Cross multiply
143,980,874.14x = 198,699,244.85 × 81,259,163.03 - Step 4: Simplify right side
143,980,874.14x = 16,146,134,331,204,038 - Step 5: Solve for x
x = 16,146,134,331,204,038/143,980,874.14 - Step 6: Final answer
x = 112,140,827.23
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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.