Finding the Fourth Proportional to 136,973.99, 189,023.64 and 76,544.63
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Solution
The fourth proportional to 136,973.99, 189,023.64 and 76,544.63 is: 105,631.33
Step by Step Solution
- Step 1: Write the proportion equation
136,973.99 : 189,023.64 = 76,544.63 : x - Step 2: Convert to fraction form
136,973.99/189,023.64 = 76,544.63/x - Step 3: Cross multiply
136,973.99x = 189,023.64 × 76,544.63 - Step 4: Simplify right side
136,973.99x = 14,468,743,639.94 - Step 5: Solve for x
x = 14,468,743,639.94/136,973.99 - Step 6: Final answer
x = 105,631.33
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1.5x scale
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.