Finding the Fourth Proportional to 155,420.10, 214,480.05 and 91,761.99
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Solution
The fourth proportional to 155,420.10, 214,480.05 and 91,761.99 is: 126,631.73
Step by Step Solution
- Step 1: Write the proportion equation
155,420.10 : 214,480.05 = 91,761.99 : x - Step 2: Convert to fraction form
155,420.10/214,480.05 = 91,761.99/x - Step 3: Cross multiply
155,420.10x = 214,480.05 × 91,761.99 - Step 4: Simplify right side
155,420.10x = 19,681,116,203.30 - Step 5: Solve for x
x = 19,681,116,203.30/155,420.10 - Step 6: Final answer
x = 126,631.73
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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.