Finding the Fourth Proportional to 121,109.20, 181,663.80 and 106,334.80
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Solution
The fourth proportional to 121,109.20, 181,663.80 and 106,334.80 is: 159,502.20
Step by Step Solution
- Step 1: Write the proportion equation
121,109.20 : 181,663.80 = 106,334.80 : x - Step 2: Convert to fraction form
121,109.20/181,663.80 = 106,334.80/x - Step 3: Cross multiply
121,109.20x = 181,663.80 × 106,334.80 - Step 4: Simplify right side
121,109.20x = 19,317,183,840.24 - Step 5: Solve for x
x = 19,317,183,840.24/121,109.20 - Step 6: Final answer
x = 159,502.20
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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.