Finding the Fourth Proportional to 156,503.68, 215,975.18 and 84,883.68
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Solution
The fourth proportional to 156,503.68, 215,975.18 and 84,883.68 is: 117,139.53
Step by Step Solution
- Step 1: Write the proportion equation
156,503.68 : 215,975.18 = 84,883.68 : x - Step 2: Convert to fraction form
156,503.68/215,975.18 = 84,883.68/x - Step 3: Cross multiply
156,503.68x = 215,975.18 × 84,883.68 - Step 4: Simplify right side
156,503.68x = 18,332,768,067.06 - Step 5: Solve for x
x = 18,332,768,067.06/156,503.68 - Step 6: Final answer
x = 117,139.53
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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.