Finding the Fourth Proportional to 157,271.42, 217,027.80 and 85,651.62
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Solution
The fourth proportional to 157,271.42, 217,027.80 and 85,651.62 is: 118,195.55
Step by Step Solution
- Step 1: Write the proportion equation
157,271.42 : 217,027.80 = 85,651.62 : x - Step 2: Convert to fraction form
157,271.42/217,027.80 = 85,651.62/x - Step 3: Cross multiply
157,271.42x = 217,027.80 × 85,651.62 - Step 4: Simplify right side
157,271.42x = 18,588,782,655.04 - Step 5: Solve for x
x = 18,588,782,655.04/157,271.42 - Step 6: Final answer
x = 118,195.55
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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.