Finding the Fourth Proportional to 155,221.97, 214,224.08 and 86,318.31
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Solution
The fourth proportional to 155,221.97, 214,224.08 and 86,318.31 is: 119,129.14
Step by Step Solution
- Step 1: Write the proportion equation
155,221.97 : 214,224.08 = 86,318.31 : x - Step 2: Convert to fraction form
155,221.97/214,224.08 = 86,318.31/x - Step 3: Cross multiply
155,221.97x = 214,224.08 × 86,318.31 - Step 4: Simplify right side
155,221.97x = 18,491,460,077.80 - Step 5: Solve for x
x = 18,491,460,077.80/155,221.97 - Step 6: Final answer
x = 119,129.14
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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.