Finding the Fourth Proportional to 115,341.10, 159,170.44 and 65,039.74
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Solution
The fourth proportional to 115,341.10, 159,170.44 and 65,039.74 is: 89,754.68
Step by Step Solution
- Step 1: Write the proportion equation
115,341.10 : 159,170.44 = 65,039.74 : x - Step 2: Convert to fraction form
115,341.10/159,170.44 = 65,039.74/x - Step 3: Cross multiply
115,341.10x = 159,170.44 × 65,039.74 - Step 4: Simplify right side
115,341.10x = 10,352,404,033.29 - Step 5: Solve for x
x = 10,352,404,033.29/115,341.10 - Step 6: Final answer
x = 89,754.68
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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.