Finding the Fourth Proportional to 107,840.80, 161,761.20 and 97,991.20
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Solution
The fourth proportional to 107,840.80, 161,761.20 and 97,991.20 is: 146,986.80
Step by Step Solution
- Step 1: Write the proportion equation
107,840.80 : 161,761.20 = 97,991.20 : x - Step 2: Convert to fraction form
107,840.80/161,761.20 = 97,991.20/x - Step 3: Cross multiply
107,840.80x = 161,761.20 × 97,991.20 - Step 4: Simplify right side
107,840.80x = 15,851,174,101.44 - Step 5: Solve for x
x = 15,851,174,101.44/107,840.80 - Step 6: Final answer
x = 146,986.80
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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.