Finding the Fourth Proportional to 121,918.83, 168,244.07 and 68,202.69
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Solution
The fourth proportional to 121,918.83, 168,244.07 and 68,202.69 is: 94,117.52
Step by Step Solution
- Step 1: Write the proportion equation
121,918.83 : 168,244.07 = 68,202.69 : x - Step 2: Convert to fraction form
121,918.83/168,244.07 = 68,202.69/x - Step 3: Cross multiply
121,918.83x = 168,244.07 × 68,202.69 - Step 4: Simplify right side
121,918.83x = 11,474,698,150.55 - Step 5: Solve for x
x = 11,474,698,150.55/121,918.83 - Step 6: Final answer
x = 94,117.52
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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.