Finding the Fourth Proportional to 137,178.58, 189,313.80 and 76,745.62
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Solution
The fourth proportional to 137,178.58, 189,313.80 and 76,745.62 is: 105,913.07
Step by Step Solution
- Step 1: Write the proportion equation
137,178.58 : 189,313.80 = 76,745.62 : x - Step 2: Convert to fraction form
137,178.58/189,313.80 = 76,745.62/x - Step 3: Cross multiply
137,178.58x = 189,313.80 × 76,745.62 - Step 4: Simplify right side
137,178.58x = 14,529,004,955.56 - Step 5: Solve for x
x = 14,529,004,955.56/137,178.58 - Step 6: Final answer
x = 105,913.07
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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.