Finding the Fourth Proportional to 145,728.40, 201,110.16 and 85,304.68
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Solution
The fourth proportional to 145,728.40, 201,110.16 and 85,304.68 is: 117,723.37
Step by Step Solution
- Step 1: Write the proportion equation
145,728.40 : 201,110.16 = 85,304.68 : x - Step 2: Convert to fraction form
145,728.40/201,110.16 = 85,304.68/x - Step 3: Cross multiply
145,728.40x = 201,110.16 × 85,304.68 - Step 4: Simplify right side
145,728.40x = 17,155,637,843.55 - Step 5: Solve for x
x = 17,155,637,843.55/145,728.40 - Step 6: Final answer
x = 117,723.37
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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.