Finding the Fourth Proportional to 190,801.20, 286,201.80 and 107,857.20
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Solution
The fourth proportional to 190,801.20, 286,201.80 and 107,857.20 is: 161,785.80
Step by Step Solution
- Step 1: Write the proportion equation
190,801.20 : 286,201.80 = 107,857.20 : x - Step 2: Convert to fraction form
190,801.20/286,201.80 = 107,857.20/x - Step 3: Cross multiply
190,801.20x = 286,201.80 × 107,857.20 - Step 4: Simplify right side
190,801.20x = 30,868,924,782.96 - Step 5: Solve for x
x = 30,868,924,782.96/190,801.20 - Step 6: Final answer
x = 161,785.80
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.