Finding the Fourth Proportional to 121,393,751.20, 182,090,626.80 and 108,639,167.20
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Solution
The fourth proportional to 121,393,751.20, 182,090,626.80 and 108,639,167.20 is: 162,958,750.80
Step by Step Solution
- Step 1: Write the proportion equation
121,393,751.20 : 182,090,626.80 = 108,639,167.20 : x - Step 2: Convert to fraction form
121,393,751.20/182,090,626.80 = 108,639,167.20/x - Step 3: Cross multiply
121,393,751.20x = 182,090,626.80 × 108,639,167.20 - Step 4: Simplify right side
121,393,751.20x = 19,782,174,050,478,004 - Step 5: Solve for x
x = 19,782,174,050,478,004/121,393,751.20 - Step 6: Final answer
x = 162,958,750.80
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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.