Finding the Fourth Proportional to 121,299.84, 167,407.20 and 73,555.20
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Solution
The fourth proportional to 121,299.84, 167,407.20 and 73,555.20 is: 101,514.31
Step by Step Solution
- Step 1: Write the proportion equation
121,299.84 : 167,407.20 = 73,555.20 : x - Step 2: Convert to fraction form
121,299.84/167,407.20 = 73,555.20/x - Step 3: Cross multiply
121,299.84x = 167,407.20 × 73,555.20 - Step 4: Simplify right side
121,299.84x = 12,313,670,077.44 - Step 5: Solve for x
x = 12,313,670,077.44/121,299.84 - Step 6: Final answer
x = 101,514.31
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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.