Finding the Fourth Proportional to 156,840.06, 216,440.62 and 85,220.08
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Solution
The fourth proportional to 156,840.06, 216,440.62 and 85,220.08 is: 117,604.44
Step by Step Solution
- Step 1: Write the proportion equation
156,840.06 : 216,440.62 = 85,220.08 : x - Step 2: Convert to fraction form
156,840.06/216,440.62 = 85,220.08/x - Step 3: Cross multiply
156,840.06x = 216,440.62 × 85,220.08 - Step 4: Simplify right side
156,840.06x = 18,445,086,951.65 - Step 5: Solve for x
x = 18,445,086,951.65/156,840.06 - Step 6: Final answer
x = 117,604.44
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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.