Finding the Fourth Proportional to 121,024.40, 181,536.60 and 115,905.20
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Solution
The fourth proportional to 121,024.40, 181,536.60 and 115,905.20 is: 173,857.80
Step by Step Solution
- Step 1: Write the proportion equation
121,024.40 : 181,536.60 = 115,905.20 : x - Step 2: Convert to fraction form
121,024.40/181,536.60 = 115,905.20/x - Step 3: Cross multiply
121,024.40x = 181,536.60 × 115,905.20 - Step 4: Simplify right side
121,024.40x = 21,041,035,930.32 - Step 5: Solve for x
x = 21,041,035,930.32/121,024.40 - Step 6: Final answer
x = 173,857.80
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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.