Finding the Fourth Proportional to 121,445.68, 167,615.37 and 73,730.80
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Solution
The fourth proportional to 121,445.68, 167,615.37 and 73,730.80 is: 101,760.85
Step by Step Solution
- Step 1: Write the proportion equation
121,445.68 : 167,615.37 = 73,730.80 : x - Step 2: Convert to fraction form
121,445.68/167,615.37 = 73,730.80/x - Step 3: Cross multiply
121,445.68x = 167,615.37 × 73,730.80 - Step 4: Simplify right side
121,445.68x = 12,358,415,322.40 - Step 5: Solve for x
x = 12,358,415,322.40/121,445.68 - Step 6: Final answer
x = 101,760.85
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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.