Finding the Fourth Proportional to 157,402.05, 217,208.49 and 85,780.53
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Solution
The fourth proportional to 157,402.05, 217,208.49 and 85,780.53 is: 118,373.68
Step by Step Solution
- Step 1: Write the proportion equation
157,402.05 : 217,208.49 = 85,780.53 : x - Step 2: Convert to fraction form
157,402.05/217,208.49 = 85,780.53/x - Step 3: Cross multiply
157,402.05x = 217,208.49 × 85,780.53 - Step 4: Simplify right side
157,402.05x = 18,632,259,392.70 - Step 5: Solve for x
x = 18,632,259,392.70/157,402.05 - Step 6: Final answer
x = 118,373.68
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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.