Finding the Fourth Proportional to 209,930,784.18, 289,762,104.15 and 121,853,157.81
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Solution
The fourth proportional to 209,930,784.18, 289,762,104.15 and 121,853,157.81 is: 168,190,804.14
Step by Step Solution
- Step 1: Write the proportion equation
209,930,784.18 : 289,762,104.15 = 121,853,157.81 : x - Step 2: Convert to fraction form
209,930,784.18/289,762,104.15 = 121,853,157.81/x - Step 3: Cross multiply
209,930,784.18x = 289,762,104.15 × 121,853,157.81 - Step 4: Simplify right side
209,930,784.18x = 35,308,427,404,347,604 - Step 5: Solve for x
x = 35,308,427,404,347,604/209,930,784.18 - Step 6: Final answer
x = 168,190,804.14
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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.