Finding the Fourth Proportional to 135,355.23, 202,918.68 and 85,325.07
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Solution
The fourth proportional to 135,355.23, 202,918.68 and 85,325.07 is: 127,915.64
Step by Step Solution
- Step 1: Write the proportion equation
135,355.23 : 202,918.68 = 85,325.07 : x - Step 2: Convert to fraction form
135,355.23/202,918.68 = 85,325.07/x - Step 3: Cross multiply
135,355.23x = 202,918.68 × 85,325.07 - Step 4: Simplify right side
135,355.23x = 17,314,050,575.31 - Step 5: Solve for x
x = 17,314,050,575.31/135,355.23 - Step 6: Final answer
x = 127,915.64
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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.