Finding the Fourth Proportional to 138,479.31, 190,877.58 and 108,212.04
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Solution
The fourth proportional to 138,479.31, 190,877.58 and 108,212.04 is: 149,157.68
Step by Step Solution
- Step 1: Write the proportion equation
138,479.31 : 190,877.58 = 108,212.04 : x - Step 2: Convert to fraction form
138,479.31/190,877.58 = 108,212.04/x - Step 3: Cross multiply
138,479.31x = 190,877.58 × 108,212.04 - Step 4: Simplify right side
138,479.31x = 20,655,252,322.06 - Step 5: Solve for x
x = 20,655,252,322.06/138,479.31 - Step 6: Final answer
x = 149,157.68
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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.