Finding the Fourth Proportional to 121,882.21, 168,126.96 and 73,451.08
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Solution
The fourth proportional to 121,882.21, 168,126.96 and 73,451.08 is: 101,320.01
Step by Step Solution
- Step 1: Write the proportion equation
121,882.21 : 168,126.96 = 73,451.08 : x - Step 2: Convert to fraction form
121,882.21/168,126.96 = 73,451.08/x - Step 3: Cross multiply
121,882.21x = 168,126.96 × 73,451.08 - Step 4: Simplify right side
121,882.21x = 12,349,106,789.12 - Step 5: Solve for x
x = 12,349,106,789.12/121,882.21 - Step 6: Final answer
x = 101,320.01
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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.