Finding the Fourth Proportional to 200,023.72, 275,902.68 and 128,290.12
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Solution
The fourth proportional to 200,023.72, 275,902.68 and 128,290.12 is: 176,956.95
Step by Step Solution
- Step 1: Write the proportion equation
200,023.72 : 275,902.68 = 128,290.12 : x - Step 2: Convert to fraction form
200,023.72/275,902.68 = 128,290.12/x - Step 3: Cross multiply
200,023.72x = 275,902.68 × 128,290.12 - Step 4: Simplify right side
200,023.72x = 35,395,587,925.52 - Step 5: Solve for x
x = 35,395,587,925.52/200,023.72 - Step 6: Final answer
x = 176,956.95
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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.