Finding the Fourth Proportional to 156,696.07, 216,238.35 and 85,078.84
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Solution
The fourth proportional to 156,696.07, 216,238.35 and 85,078.84 is: 117,407.59
Step by Step Solution
- Step 1: Write the proportion equation
156,696.07 : 216,238.35 = 85,078.84 : x - Step 2: Convert to fraction form
156,696.07/216,238.35 = 85,078.84/x - Step 3: Cross multiply
156,696.07x = 216,238.35 × 85,078.84 - Step 4: Simplify right side
156,696.07x = 18,397,307,926.13 - Step 5: Solve for x
x = 18,397,307,926.13/156,696.07 - Step 6: Final answer
x = 117,407.59
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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.