Finding the Fourth Proportional to 128,023.94, 176,739.47 and 93,529.99
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Solution
The fourth proportional to 128,023.94, 176,739.47 and 93,529.99 is: 129,119.92
Step by Step Solution
- Step 1: Write the proportion equation
128,023.94 : 176,739.47 = 93,529.99 : x - Step 2: Convert to fraction form
128,023.94/176,739.47 = 93,529.99/x - Step 3: Cross multiply
128,023.94x = 176,739.47 × 93,529.99 - Step 4: Simplify right side
128,023.94x = 16,530,440,965.72 - Step 5: Solve for x
x = 16,530,440,965.72/128,023.94 - Step 6: Final answer
x = 129,119.92
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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.