Finding the Fourth Proportional to 126,372,457.80, 189,558,686.70 and 126,372,457.80
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Solution
The fourth proportional to 126,372,457.80, 189,558,686.70 and 126,372,457.80 is: 189,558,686.70
Step by Step Solution
- Step 1: Write the proportion equation
126,372,457.80 : 189,558,686.70 = 126,372,457.80 : x - Step 2: Convert to fraction form
126,372,457.80/189,558,686.70 = 126,372,457.80/x - Step 3: Cross multiply
126,372,457.80x = 189,558,686.70 × 126,372,457.80 - Step 4: Simplify right side
126,372,457.80x = 23,954,997,135,619,168 - Step 5: Solve for x
x = 23,954,997,135,619,168/126,372,457.80 - Step 6: Final answer
x = 189,558,686.70
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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.