Finding the Fourth Proportional to 140,387.69, 193,735.05 and 79,963.99
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Solution
The fourth proportional to 140,387.69, 193,735.05 and 79,963.99 is: 110,350.33
Step by Step Solution
- Step 1: Write the proportion equation
140,387.69 : 193,735.05 = 79,963.99 : x - Step 2: Convert to fraction form
140,387.69/193,735.05 = 79,963.99/x - Step 3: Cross multiply
140,387.69x = 193,735.05 × 79,963.99 - Step 4: Simplify right side
140,387.69x = 15,491,827,600.85 - Step 5: Solve for x
x = 15,491,827,600.85/140,387.69 - Step 6: Final answer
x = 110,350.33
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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.