Finding the Fourth Proportional to 121,420.80, 167,554.56 and 67,711.68
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Solution
The fourth proportional to 121,420.80, 167,554.56 and 67,711.68 is: 93,438.69
Step by Step Solution
- Step 1: Write the proportion equation
121,420.80 : 167,554.56 = 67,711.68 : x - Step 2: Convert to fraction form
121,420.80/167,554.56 = 67,711.68/x - Step 3: Cross multiply
121,420.80x = 167,554.56 × 67,711.68 - Step 4: Simplify right side
121,420.80x = 11,345,400,749.26 - Step 5: Solve for x
x = 11,345,400,749.26/121,420.80 - Step 6: Final answer
x = 93,438.69
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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.