Finding the Fourth Proportional to 157,871.66, 217,863.69 and 86,252.95
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Solution
The fourth proportional to 157,871.66, 217,863.69 and 86,252.95 is: 119,029.50
Step by Step Solution
- Step 1: Write the proportion equation
157,871.66 : 217,863.69 = 86,252.95 : x - Step 2: Convert to fraction form
157,871.66/217,863.69 = 86,252.95/x - Step 3: Cross multiply
157,871.66x = 217,863.69 × 86,252.95 - Step 4: Simplify right side
157,871.66x = 18,791,384,871.07 - Step 5: Solve for x
x = 18,791,384,871.07/157,871.66 - Step 6: Final answer
x = 119,029.50
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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.