Finding the Fourth Proportional to 201,858.75, 278,565.08 and 112,434.75
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Solution
The fourth proportional to 201,858.75, 278,565.08 and 112,434.75 is: 155,159.96
Step by Step Solution
- Step 1: Write the proportion equation
201,858.75 : 278,565.08 = 112,434.75 : x - Step 2: Convert to fraction form
201,858.75/278,565.08 = 112,434.75/x - Step 3: Cross multiply
201,858.75x = 278,565.08 × 112,434.75 - Step 4: Simplify right side
201,858.75x = 31,320,395,128.53 - Step 5: Solve for x
x = 31,320,395,128.53/201,858.75 - Step 6: Final answer
x = 155,159.96
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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.