Finding the Fourth Proportional to 121,326.08, 167,438.40 and 73,581.44
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Solution
The fourth proportional to 121,326.08, 167,438.40 and 73,581.44 is: 101,547.49
Step by Step Solution
- Step 1: Write the proportion equation
121,326.08 : 167,438.40 = 73,581.44 : x - Step 2: Convert to fraction form
121,326.08/167,438.40 = 73,581.44/x - Step 3: Cross multiply
121,326.08x = 167,438.40 × 73,581.44 - Step 4: Simplify right side
121,326.08x = 12,320,358,583.30 - Step 5: Solve for x
x = 12,320,358,583.30/121,326.08 - Step 6: Final answer
x = 101,547.49
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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.