Finding the Fourth Proportional to 157,418.55, 217,242.36 and 85,803.21
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Solution
The fourth proportional to 157,418.55, 217,242.36 and 85,803.21 is: 118,411.02
Step by Step Solution
- Step 1: Write the proportion equation
157,418.55 : 217,242.36 = 85,803.21 : x - Step 2: Convert to fraction form
157,418.55/217,242.36 = 85,803.21/x - Step 3: Cross multiply
157,418.55x = 217,242.36 × 85,803.21 - Step 4: Simplify right side
157,418.55x = 18,640,091,835.98 - Step 5: Solve for x
x = 18,640,091,835.98/157,418.55 - Step 6: Final answer
x = 118,411.02
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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.