Finding the Fourth Proportional to 85,468.20, 128,202.30 and 84,301.80
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Solution
The fourth proportional to 85,468.20, 128,202.30 and 84,301.80 is: 126,452.70
Step by Step Solution
- Step 1: Write the proportion equation
85,468.20 : 128,202.30 = 84,301.80 : x - Step 2: Convert to fraction form
85,468.20/128,202.30 = 84,301.80/x - Step 3: Cross multiply
85,468.20x = 128,202.30 × 84,301.80 - Step 4: Simplify right side
85,468.20x = 10,807,684,654.14 - Step 5: Solve for x
x = 10,807,684,654.14/85,468.20 - Step 6: Final answer
x = 126,452.70
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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.