Finding the Fourth Proportional to 121,477.28, 167,642.80 and 70,486.08
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Solution
The fourth proportional to 121,477.28, 167,642.80 and 70,486.08 is: 97,273.20
Step by Step Solution
- Step 1: Write the proportion equation
121,477.28 : 167,642.80 = 70,486.08 : x - Step 2: Convert to fraction form
121,477.28/167,642.80 = 70,486.08/x - Step 3: Cross multiply
121,477.28x = 167,642.80 × 70,486.08 - Step 4: Simplify right side
121,477.28x = 11,816,483,812.22 - Step 5: Solve for x
x = 11,816,483,812.22/121,477.28 - Step 6: Final answer
x = 97,273.20
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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.