Finding the Fourth Proportional to 121,400.69, 181,202.08 and 113,921.15
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Solution
The fourth proportional to 121,400.69, 181,202.08 and 113,921.15 is: 170,038.15
Step by Step Solution
- Step 1: Write the proportion equation
121,400.69 : 181,202.08 = 113,921.15 : x - Step 2: Convert to fraction form
121,400.69/181,202.08 = 113,921.15/x - Step 3: Cross multiply
121,400.69x = 181,202.08 × 113,921.15 - Step 4: Simplify right side
121,400.69x = 20,642,749,335.99 - Step 5: Solve for x
x = 20,642,749,335.99/121,400.69 - Step 6: Final answer
x = 170,038.15
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.