Finding the Fourth Proportional to 145,744.92, 201,130.09 and 81,212.32
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Solution
The fourth proportional to 145,744.92, 201,130.09 and 81,212.32 is: 112,074.17
Step by Step Solution
- Step 1: Write the proportion equation
145,744.92 : 201,130.09 = 81,212.32 : x - Step 2: Convert to fraction form
145,744.92/201,130.09 = 81,212.32/x - Step 3: Cross multiply
145,744.92x = 201,130.09 × 81,212.32 - Step 4: Simplify right side
145,744.92x = 16,334,241,279.09 - Step 5: Solve for x
x = 16,334,241,279.09/145,744.92 - Step 6: Final answer
x = 112,074.17
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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.