Finding the Fourth Proportional to 155,790.18, 214,996.68 and 87,809.99
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Solution
The fourth proportional to 155,790.18, 214,996.68 and 87,809.99 is: 121,181.29
Step by Step Solution
- Step 1: Write the proportion equation
155,790.18 : 214,996.68 = 87,809.99 : x - Step 2: Convert to fraction form
155,790.18/214,996.68 = 87,809.99/x - Step 3: Cross multiply
155,790.18x = 214,996.68 × 87,809.99 - Step 4: Simplify right side
155,790.18x = 18,878,855,245.85 - Step 5: Solve for x
x = 18,878,855,245.85/155,790.18 - Step 6: Final answer
x = 121,181.29
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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.