Finding the Fourth Proportional to 151,905.78, 209,626.29 and 83,929.26
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Solution
The fourth proportional to 151,905.78, 209,626.29 and 83,929.26 is: 115,820.34
Step by Step Solution
- Step 1: Write the proportion equation
151,905.78 : 209,626.29 = 83,929.26 : x - Step 2: Convert to fraction form
151,905.78/209,626.29 = 83,929.26/x - Step 3: Cross multiply
151,905.78x = 209,626.29 × 83,929.26 - Step 4: Simplify right side
151,905.78x = 17,593,779,396.25 - Step 5: Solve for x
x = 17,593,779,396.25/151,905.78 - Step 6: Final answer
x = 115,820.34
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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.