Finding the Fourth Proportional to 156,614.63, 216,128.34 and 84,994.65
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Solution
The fourth proportional to 156,614.63, 216,128.34 and 84,994.65 is: 117,292.70
Step by Step Solution
- Step 1: Write the proportion equation
156,614.63 : 216,128.34 = 84,994.65 : x - Step 2: Convert to fraction form
156,614.63/216,128.34 = 84,994.65/x - Step 3: Cross multiply
156,614.63x = 216,128.34 × 84,994.65 - Step 4: Simplify right side
156,614.63x = 18,369,752,613.38 - Step 5: Solve for x
x = 18,369,752,613.38/156,614.63 - Step 6: Final answer
x = 117,292.70
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1.5x scale
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.