Finding the Fourth Proportional to 129,665.80, 178,765.50 and 97,262.68
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Solution
The fourth proportional to 129,665.80, 178,765.50 and 97,262.68 is: 134,092.50
Step by Step Solution
- Step 1: Write the proportion equation
129,665.80 : 178,765.50 = 97,262.68 : x - Step 2: Convert to fraction form
129,665.80/178,765.50 = 97,262.68/x - Step 3: Cross multiply
129,665.80x = 178,765.50 × 97,262.68 - Step 4: Simplify right side
129,665.80x = 17,387,211,621.54 - Step 5: Solve for x
x = 17,387,211,621.54/129,665.80 - Step 6: Final answer
x = 134,092.50
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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.