Finding the Fourth Proportional to 161,742.99, 223,202.34 and 90,121.47
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Solution
The fourth proportional to 161,742.99, 223,202.34 and 90,121.47 is: 124,365.96
Step by Step Solution
- Step 1: Write the proportion equation
161,742.99 : 223,202.34 = 90,121.47 : x - Step 2: Convert to fraction form
161,742.99/223,202.34 = 90,121.47/x - Step 3: Cross multiply
161,742.99x = 223,202.34 × 90,121.47 - Step 4: Simplify right side
161,742.99x = 20,115,322,988.24 - Step 5: Solve for x
x = 20,115,322,988.24/161,742.99 - Step 6: Final answer
x = 124,365.96
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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.