Finding the Fourth Proportional to 143,139,311.80, 214,708,967.70 and 66,436,847.80
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Solution
The fourth proportional to 143,139,311.80, 214,708,967.70 and 66,436,847.80 is: 99,655,271.70
Step by Step Solution
- Step 1: Write the proportion equation
143,139,311.80 : 214,708,967.70 = 66,436,847.80 : x - Step 2: Convert to fraction form
143,139,311.80/214,708,967.70 = 66,436,847.80/x - Step 3: Cross multiply
143,139,311.80x = 214,708,967.70 × 66,436,847.80 - Step 4: Simplify right side
143,139,311.80x = 14,264,587,008,380,014 - Step 5: Solve for x
x = 14,264,587,008,380,014/143,139,311.80 - Step 6: Final answer
x = 99,655,271.70
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.