Finding the Fourth Proportional to 133,877.12, 184,729.28 and 77,278.08
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Solution
The fourth proportional to 133,877.12, 184,729.28 and 77,278.08 is: 106,631.54
Step by Step Solution
- Step 1: Write the proportion equation
133,877.12 : 184,729.28 = 77,278.08 : x - Step 2: Convert to fraction form
133,877.12/184,729.28 = 77,278.08/x - Step 3: Cross multiply
133,877.12x = 184,729.28 × 77,278.08 - Step 4: Simplify right side
133,877.12x = 14,275,524,078.18 - Step 5: Solve for x
x = 14,275,524,078.18/133,877.12 - Step 6: Final answer
x = 106,631.54
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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.