Finding the Fourth Proportional to 121,720.44, 167,973.76 and 67,271.08
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Solution
The fourth proportional to 121,720.44, 167,973.76 and 67,271.08 is: 92,833.84
Step by Step Solution
- Step 1: Write the proportion equation
121,720.44 : 167,973.76 = 67,271.08 : x - Step 2: Convert to fraction form
121,720.44/167,973.76 = 67,271.08/x - Step 3: Cross multiply
121,720.44x = 167,973.76 × 67,271.08 - Step 4: Simplify right side
121,720.44x = 11,299,776,246.86 - Step 5: Solve for x
x = 11,299,776,246.86/121,720.44 - Step 6: Final answer
x = 92,833.84
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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.