Finding the Fourth Proportional to 162,026.80, 243,040.20 and 128,201.20
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Solution
The fourth proportional to 162,026.80, 243,040.20 and 128,201.20 is: 192,301.80
Step by Step Solution
- Step 1: Write the proportion equation
162,026.80 : 243,040.20 = 128,201.20 : x - Step 2: Convert to fraction form
162,026.80/243,040.20 = 128,201.20/x - Step 3: Cross multiply
162,026.80x = 243,040.20 × 128,201.20 - Step 4: Simplify right side
162,026.80x = 31,158,045,288.24 - Step 5: Solve for x
x = 31,158,045,288.24/162,026.80 - Step 6: Final answer
x = 192,301.80
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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.