Finding the Fourth Proportional to 126,372,644.10, 189,558,966.15 and 105,965,309.70
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Solution
The fourth proportional to 126,372,644.10, 189,558,966.15 and 105,965,309.70 is: 158,947,964.55
Step by Step Solution
- Step 1: Write the proportion equation
126,372,644.10 : 189,558,966.15 = 105,965,309.70 : x - Step 2: Convert to fraction form
126,372,644.10/189,558,966.15 = 105,965,309.70/x - Step 3: Cross multiply
126,372,644.10x = 189,558,966.15 × 105,965,309.70 - Step 4: Simplify right side
126,372,644.10x = 20,086,674,554,496,568 - Step 5: Solve for x
x = 20,086,674,554,496,568/126,372,644.10 - Step 6: Final answer
x = 158,947,964.55
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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.