Finding the Fourth Proportional to 145,609.12, 200,940.15 and 81,946.99
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Solution
The fourth proportional to 145,609.12, 200,940.15 and 81,946.99 is: 113,086.60
Step by Step Solution
- Step 1: Write the proportion equation
145,609.12 : 200,940.15 = 81,946.99 : x - Step 2: Convert to fraction form
145,609.12/200,940.15 = 81,946.99/x - Step 3: Cross multiply
145,609.12x = 200,940.15 × 81,946.99 - Step 4: Simplify right side
145,609.12x = 16,466,440,462.65 - Step 5: Solve for x
x = 16,466,440,462.65/145,609.12 - Step 6: Final answer
x = 113,086.60
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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.