Finding the Fourth Proportional to 156,684.10, 235,126.95 and 86,613.70
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Solution
The fourth proportional to 156,684.10, 235,126.95 and 86,613.70 is: 129,976.27
Step by Step Solution
- Step 1: Write the proportion equation
156,684.10 : 235,126.95 = 86,613.70 : x - Step 2: Convert to fraction form
156,684.10/235,126.95 = 86,613.70/x - Step 3: Cross multiply
156,684.10x = 235,126.95 × 86,613.70 - Step 4: Simplify right side
156,684.10x = 20,365,215,109.22 - Step 5: Solve for x
x = 20,365,215,109.22/156,684.10 - Step 6: Final answer
x = 129,976.27
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Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.