Finding the Fourth Proportional to 137,574.08, 189,771.79 and 86,505.95
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Solution
The fourth proportional to 137,574.08, 189,771.79 and 86,505.95 is: 119,327.63
Step by Step Solution
- Step 1: Write the proportion equation
137,574.08 : 189,771.79 = 86,505.95 : x - Step 2: Convert to fraction form
137,574.08/189,771.79 = 86,505.95/x - Step 3: Cross multiply
137,574.08x = 189,771.79 × 86,505.95 - Step 4: Simplify right side
137,574.08x = 16,416,388,544.62 - Step 5: Solve for x
x = 16,416,388,544.62/137,574.08 - Step 6: Final answer
x = 119,327.63
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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.