Finding the Fourth Proportional to 121,697.17, 167,832.97 and 101,346.62
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Solution
The fourth proportional to 121,697.17, 167,832.97 and 101,346.62 is: 139,767.45
Step by Step Solution
- Step 1: Write the proportion equation
121,697.17 : 167,832.97 = 101,346.62 : x - Step 2: Convert to fraction form
121,697.17/167,832.97 = 101,346.62/x - Step 3: Cross multiply
121,697.17x = 167,832.97 × 101,346.62 - Step 4: Simplify right side
121,697.17x = 17,009,303,141.53 - Step 5: Solve for x
x = 17,009,303,141.53/121,697.17 - Step 6: Final answer
x = 139,767.45
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1.5x scale
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.