Finding the Third Proportional to 128,787.75 and 197,025.75
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Solution
The third proportional to 128,787.75 and 197,025.75 is: 301,419.55
Step by Step Solution
- Step 1: Write the proportion equation
128,787.75 : 197,025.75 = 197,025.75 : x - Step 2: Convert to fraction form
128,787.75/197,025.75 = 197,025.75/x - Step 3: Cross multiply
128,787.75x = 197,025.75 × 197,025.75 - Step 4: Simplify right side
128,787.75x = 38,819,146,163.06 - Step 5: Solve for x
x = 38,819,146,163.06/128,787.75 - Step 6: Final answer
x = 301,419.55
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These problems maintain the same ratio (1.53) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.