Finding the Fourth Proportional to 99,731,935.80, 149,597,903.70 and 67,399,327.80
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Solution
The fourth proportional to 99,731,935.80, 149,597,903.70 and 67,399,327.80 is: 101,098,991.70
Step by Step Solution
- Step 1: Write the proportion equation
99,731,935.80 : 149,597,903.70 = 67,399,327.80 : x - Step 2: Convert to fraction form
99,731,935.80/149,597,903.70 = 67,399,327.80/x - Step 3: Cross multiply
99,731,935.80x = 149,597,903.70 × 67,399,327.80 - Step 4: Simplify right side
99,731,935.80x = 10,082,798,149,669,132 - Step 5: Solve for x
x = 10,082,798,149,669,132/99,731,935.80 - Step 6: Final answer
x = 101,098,991.70
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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.