Finding the Fourth Proportional to 134,668.92, 201,780.12 and 81,918.84
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Solution
The fourth proportional to 134,668.92, 201,780.12 and 81,918.84 is: 122,742.45
Step by Step Solution
- Step 1: Write the proportion equation
134,668.92 : 201,780.12 = 81,918.84 : x - Step 2: Convert to fraction form
134,668.92/201,780.12 = 81,918.84/x - Step 3: Cross multiply
134,668.92x = 201,780.12 × 81,918.84 - Step 4: Simplify right side
134,668.92x = 16,529,593,365.46 - Step 5: Solve for x
x = 16,529,593,365.46/134,668.92 - Step 6: Final answer
x = 122,742.45
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1.5x scale
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.