Finding the Fourth Proportional to 147,121.56, 203,021.78 and 83,457.99
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Solution
The fourth proportional to 147,121.56, 203,021.78 and 83,457.99 is: 115,168.64
Step by Step Solution
- Step 1: Write the proportion equation
147,121.56 : 203,021.78 = 83,457.99 : x - Step 2: Convert to fraction form
147,121.56/203,021.78 = 83,457.99/x - Step 3: Cross multiply
147,121.56x = 203,021.78 × 83,457.99 - Step 4: Simplify right side
147,121.56x = 16,943,789,267.73 - Step 5: Solve for x
x = 16,943,789,267.73/147,121.56 - Step 6: Final answer
x = 115,168.64
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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.