Finding the Fourth Proportional to 155,911.18, 215,157.44 and 84,291.18
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Solution
The fourth proportional to 155,911.18, 215,157.44 and 84,291.18 is: 116,321.83
Step by Step Solution
- Step 1: Write the proportion equation
155,911.18 : 215,157.44 = 84,291.18 : x - Step 2: Convert to fraction form
155,911.18/215,157.44 = 84,291.18/x - Step 3: Cross multiply
155,911.18x = 215,157.44 × 84,291.18 - Step 4: Simplify right side
155,911.18x = 18,135,874,503.38 - Step 5: Solve for x
x = 18,135,874,503.38/155,911.18 - Step 6: Final answer
x = 116,321.83
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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.