Finding the Fourth Proportional to 147,021.84, 202,889.16 and 81,609.90
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Solution
The fourth proportional to 147,021.84, 202,889.16 and 81,609.90 is: 112,621.12
Step by Step Solution
- Step 1: Write the proportion equation
147,021.84 : 202,889.16 = 81,609.90 : x - Step 2: Convert to fraction form
147,021.84/202,889.16 = 81,609.90/x - Step 3: Cross multiply
147,021.84x = 202,889.16 × 81,609.90 - Step 4: Simplify right side
147,021.84x = 16,557,764,058.68 - Step 5: Solve for x
x = 16,557,764,058.68/147,021.84 - Step 6: Final answer
x = 112,621.12
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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.