Finding the Fourth Proportional to 121,853.49, 167,783.99 and 106,661.13
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Solution
The fourth proportional to 121,853.49, 167,783.99 and 106,661.13 is: 146,865.14
Step by Step Solution
- Step 1: Write the proportion equation
121,853.49 : 167,783.99 = 106,661.13 : x - Step 2: Convert to fraction form
121,853.49/167,783.99 = 106,661.13/x - Step 3: Cross multiply
121,853.49x = 167,783.99 × 106,661.13 - Step 4: Simplify right side
121,853.49x = 17,896,029,436.00 - Step 5: Solve for x
x = 17,896,029,436.00/121,853.49 - Step 6: Final answer
x = 146,865.14
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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.