Finding the Fourth Proportional to 151,272,609.38, 208,750,689.56 and 84,288,106.76
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Solution
The fourth proportional to 151,272,609.38, 208,750,689.56 and 84,288,106.76 is: 116,314,516.42
Step by Step Solution
- Step 1: Write the proportion equation
151,272,609.38 : 208,750,689.56 = 84,288,106.76 : x - Step 2: Convert to fraction form
151,272,609.38/208,750,689.56 = 84,288,106.76/x - Step 3: Cross multiply
151,272,609.38x = 208,750,689.56 × 84,288,106.76 - Step 4: Simplify right side
151,272,609.38x = 17,595,200,407,723,546 - Step 5: Solve for x
x = 17,595,200,407,723,546/151,272,609.38 - Step 6: Final answer
x = 116,314,516.42
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.