Finding the Fourth Proportional to 121,119,167.80, 181,678,751.70 and 121,119,167.80
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Solution
The fourth proportional to 121,119,167.80, 181,678,751.70 and 121,119,167.80 is: 181,678,751.70
Step by Step Solution
- Step 1: Write the proportion equation
121,119,167.80 : 181,678,751.70 = 121,119,167.80 : x - Step 2: Convert to fraction form
121,119,167.80/181,678,751.70 = 121,119,167.80/x - Step 3: Cross multiply
121,119,167.80x = 181,678,751.70 × 121,119,167.80 - Step 4: Simplify right side
121,119,167.80x = 22,004,779,212,846,832 - Step 5: Solve for x
x = 22,004,779,212,846,832/121,119,167.80 - Step 6: Final answer
x = 181,678,751.70
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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.