Finding the Fourth Proportional to 209,930,802.92, 289,762,129.98 and 121,853,176.56
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Solution
The fourth proportional to 209,930,802.92, 289,762,129.98 and 121,853,176.56 is: 168,190,830.00
Step by Step Solution
- Step 1: Write the proportion equation
209,930,802.92 : 289,762,129.98 = 121,853,176.56 : x - Step 2: Convert to fraction form
209,930,802.92/289,762,129.98 = 121,853,176.56/x - Step 3: Cross multiply
209,930,802.92x = 289,762,129.98 × 121,853,176.56 - Step 4: Simplify right side
209,930,802.92x = 35,308,435,984,854,612 - Step 5: Solve for x
x = 35,308,435,984,854,612/209,930,802.92 - Step 6: Final answer
x = 168,190,830.00
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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.