Finding the Fourth Proportional to 128,438.28, 192,637.98 and 34,951.32
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Solution
The fourth proportional to 128,438.28, 192,637.98 and 34,951.32 is: 52,421.69
Step by Step Solution
- Step 1: Write the proportion equation
128,438.28 : 192,637.98 = 34,951.32 : x - Step 2: Convert to fraction form
128,438.28/192,637.98 = 34,951.32/x - Step 3: Cross multiply
128,438.28x = 192,637.98 × 34,951.32 - Step 4: Simplify right side
128,438.28x = 6,732,951,683.13 - Step 5: Solve for x
x = 6,732,951,683.13/128,438.28 - Step 6: Final answer
x = 52,421.69
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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.