Finding the Fourth Proportional to 121,889.62, 168,206.68 and 68,174.60
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Solution
The fourth proportional to 121,889.62, 168,206.68 and 68,174.60 is: 94,080.39
Step by Step Solution
- Step 1: Write the proportion equation
121,889.62 : 168,206.68 = 68,174.60 : x - Step 2: Convert to fraction form
121,889.62/168,206.68 = 68,174.60/x - Step 3: Cross multiply
121,889.62x = 168,206.68 × 68,174.60 - Step 4: Simplify right side
121,889.62x = 11,467,423,126.33 - Step 5: Solve for x
x = 11,467,423,126.33/121,889.62 - Step 6: Final answer
x = 94,080.39
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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.