Finding the Fourth Proportional to 212,103.75, 292,705.08 and 115,307.81
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Solution
The fourth proportional to 212,103.75, 292,705.08 and 115,307.81 is: 159,125.81
Step by Step Solution
- Step 1: Write the proportion equation
212,103.75 : 292,705.08 = 115,307.81 : x - Step 2: Convert to fraction form
212,103.75/292,705.08 = 115,307.81/x - Step 3: Cross multiply
212,103.75x = 292,705.08 × 115,307.81 - Step 4: Simplify right side
212,103.75x = 33,751,180,287.15 - Step 5: Solve for x
x = 33,751,180,287.15/212,103.75 - Step 6: Final answer
x = 159,125.81
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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.