Finding the Fourth Proportional to 201,669.12, 278,426.88 and 133,745.28
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Solution
The fourth proportional to 201,669.12, 278,426.88 and 133,745.28 is: 184,650.39
Step by Step Solution
- Step 1: Write the proportion equation
201,669.12 : 278,426.88 = 133,745.28 : x - Step 2: Convert to fraction form
201,669.12/278,426.88 = 133,745.28/x - Step 3: Cross multiply
201,669.12x = 278,426.88 × 133,745.28 - Step 4: Simplify right side
201,669.12x = 37,238,281,025.13 - Step 5: Solve for x
x = 37,238,281,025.13/201,669.12 - Step 6: Final answer
x = 184,650.39
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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.