Finding the Fourth Proportional to 209,155.13, 313,781.90 and 68,913.75
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Solution
The fourth proportional to 209,155.13, 313,781.90 and 68,913.75 is: 103,386.84
Step by Step Solution
- Step 1: Write the proportion equation
209,155.13 : 313,781.90 = 68,913.75 : x - Step 2: Convert to fraction form
209,155.13/313,781.90 = 68,913.75/x - Step 3: Cross multiply
209,155.13x = 313,781.90 × 68,913.75 - Step 4: Simplify right side
209,155.13x = 21,623,887,411.13 - Step 5: Solve for x
x = 21,623,887,411.13/209,155.13 - Step 6: Final answer
x = 103,386.84
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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.