Finding the Fourth Proportional to 99,586,921.20, 149,380,381.80 and 82,580,809.20
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Solution
The fourth proportional to 99,586,921.20, 149,380,381.80 and 82,580,809.20 is: 123,871,213.80
Step by Step Solution
- Step 1: Write the proportion equation
99,586,921.20 : 149,380,381.80 = 82,580,809.20 : x - Step 2: Convert to fraction form
99,586,921.20/149,380,381.80 = 82,580,809.20/x - Step 3: Cross multiply
99,586,921.20x = 149,380,381.80 × 82,580,809.20 - Step 4: Simplify right side
99,586,921.20x = 12,335,952,807,648,954 - Step 5: Solve for x
x = 12,335,952,807,648,954/99,586,921.20 - Step 6: Final answer
x = 123,871,213.80
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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.