Finding the Fourth Proportional to 157,311.96, 217,089.42 and 85,691.99
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Solution
The fourth proportional to 157,311.96, 217,089.42 and 85,691.99 is: 118,254.36
Step by Step Solution
- Step 1: Write the proportion equation
157,311.96 : 217,089.42 = 85,691.99 : x - Step 2: Convert to fraction form
157,311.96/217,089.42 = 85,691.99/x - Step 3: Cross multiply
157,311.96x = 217,089.42 × 85,691.99 - Step 4: Simplify right side
157,311.96x = 18,602,824,629.12 - Step 5: Solve for x
x = 18,602,824,629.12/157,311.96 - Step 6: Final answer
x = 118,254.36
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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.