Finding the Fourth Proportional to 121,315.93, 167,417.07 and 66,865.09
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Solution
The fourth proportional to 121,315.93, 167,417.07 and 66,865.09 is: 92,274.42
Step by Step Solution
- Step 1: Write the proportion equation
121,315.93 : 167,417.07 = 66,865.09 : x - Step 2: Convert to fraction form
121,315.93/167,417.07 = 66,865.09/x - Step 3: Cross multiply
121,315.93x = 167,417.07 × 66,865.09 - Step 4: Simplify right side
121,315.93x = 11,194,357,453.09 - Step 5: Solve for x
x = 11,194,357,453.09/121,315.93 - Step 6: Final answer
x = 92,274.42
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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.