Finding the Fourth Proportional to 118,153.51, 162,959.66 and 75,715.99
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Solution
The fourth proportional to 118,153.51, 162,959.66 and 75,715.99 is: 104,428.99
Step by Step Solution
- Step 1: Write the proportion equation
118,153.51 : 162,959.66 = 75,715.99 : x - Step 2: Convert to fraction form
118,153.51/162,959.66 = 75,715.99/x - Step 3: Cross multiply
118,153.51x = 162,959.66 × 75,715.99 - Step 4: Simplify right side
118,153.51x = 12,338,651,608.38 - Step 5: Solve for x
x = 12,338,651,608.38/118,153.51 - Step 6: Final answer
x = 104,428.99
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1.5x scale
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.