Finding the Fourth Proportional to 128,434.06, 192,664.05 and 48,451.96
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Solution
The fourth proportional to 128,434.06, 192,664.05 and 48,451.96 is: 72,682.83
Step by Step Solution
- Step 1: Write the proportion equation
128,434.06 : 192,664.05 = 48,451.96 : x - Step 2: Convert to fraction form
128,434.06/192,664.05 = 48,451.96/x - Step 3: Cross multiply
128,434.06x = 192,664.05 × 48,451.96 - Step 4: Simplify right side
128,434.06x = 9,334,950,844.04 - Step 5: Solve for x
x = 9,334,950,844.04/128,434.06 - Step 6: Final answer
x = 72,682.83
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.