Finding the Fourth Proportional to 134,321.40, 201,417.44 and 78,174.09
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Solution
The fourth proportional to 134,321.40, 201,417.44 and 78,174.09 is: 117,223.50
Step by Step Solution
- Step 1: Write the proportion equation
134,321.40 : 201,417.44 = 78,174.09 : x - Step 2: Convert to fraction form
134,321.40/201,417.44 = 78,174.09/x - Step 3: Cross multiply
134,321.40x = 201,417.44 × 78,174.09 - Step 4: Simplify right side
134,321.40x = 15,745,624,691.26 - Step 5: Solve for x
x = 15,745,624,691.26/134,321.40 - Step 6: Final answer
x = 117,223.50
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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.