Finding the Fourth Proportional to 135,693.20, 203,539.80 and 83,205.20
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Solution
The fourth proportional to 135,693.20, 203,539.80 and 83,205.20 is: 124,807.80
Step by Step Solution
- Step 1: Write the proportion equation
135,693.20 : 203,539.80 = 83,205.20 : x - Step 2: Convert to fraction form
135,693.20/203,539.80 = 83,205.20/x - Step 3: Cross multiply
135,693.20x = 203,539.80 × 83,205.20 - Step 4: Simplify right side
135,693.20x = 16,935,569,766.96 - Step 5: Solve for x
x = 16,935,569,766.96/135,693.20 - Step 6: Final answer
x = 124,807.80
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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.