Finding the Fourth Proportional to 121,816.14, 168,107.52 and 68,104.14
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Solution
The fourth proportional to 121,816.14, 168,107.52 and 68,104.14 is: 93,984.41
Step by Step Solution
- Step 1: Write the proportion equation
121,816.14 : 168,107.52 = 68,104.14 : x - Step 2: Convert to fraction form
121,816.14/168,107.52 = 68,104.14/x - Step 3: Cross multiply
121,816.14x = 168,107.52 × 68,104.14 - Step 4: Simplify right side
121,816.14x = 11,448,818,077.13 - Step 5: Solve for x
x = 11,448,818,077.13/121,816.14 - Step 6: Final answer
x = 93,984.41
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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.