Finding the Fourth Proportional to 157,690.40, 217,604.76 and 86,069.84
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Solution
The fourth proportional to 157,690.40, 217,604.76 and 86,069.84 is: 118,772.02
Step by Step Solution
- Step 1: Write the proportion equation
157,690.40 : 217,604.76 = 86,069.84 : x - Step 2: Convert to fraction form
157,690.40/217,604.76 = 86,069.84/x - Step 3: Cross multiply
157,690.40x = 217,604.76 × 86,069.84 - Step 4: Simplify right side
157,690.40x = 18,729,206,876.44 - Step 5: Solve for x
x = 18,729,206,876.44/157,690.40 - Step 6: Final answer
x = 118,772.02
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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.