Finding the Fourth Proportional to 100,117.24, 138,177.29 and 57,096.81
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Solution
The fourth proportional to 100,117.24, 138,177.29 and 57,096.81 is: 78,802.44
Step by Step Solution
- Step 1: Write the proportion equation
100,117.24 : 138,177.29 = 57,096.81 : x - Step 2: Convert to fraction form
100,117.24/138,177.29 = 57,096.81/x - Step 3: Cross multiply
100,117.24x = 138,177.29 × 57,096.81 - Step 4: Simplify right side
100,117.24x = 7,889,482,616.19 - Step 5: Solve for x
x = 7,889,482,616.19/100,117.24 - Step 6: Final answer
x = 78,802.44
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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.