Finding the Fourth Proportional to 157,872.96, 217,868.88 and 86,252.40
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Solution
The fourth proportional to 157,872.96, 217,868.88 and 86,252.40 is: 119,030.60
Step by Step Solution
- Step 1: Write the proportion equation
157,872.96 : 217,868.88 = 86,252.40 : x - Step 2: Convert to fraction form
157,872.96/217,868.88 = 86,252.40/x - Step 3: Cross multiply
157,872.96x = 217,868.88 × 86,252.40 - Step 4: Simplify right side
157,872.96x = 18,791,713,785.31 - Step 5: Solve for x
x = 18,791,713,785.31/157,872.96 - Step 6: Final answer
x = 119,030.60
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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.