Finding the Fourth Proportional to 153,940.02, 212,440.84 and 85,954.70
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Solution
The fourth proportional to 153,940.02, 212,440.84 and 85,954.70 is: 118,619.50
Step by Step Solution
- Step 1: Write the proportion equation
153,940.02 : 212,440.84 = 85,954.70 : x - Step 2: Convert to fraction form
153,940.02/212,440.84 = 85,954.70/x - Step 3: Cross multiply
153,940.02x = 212,440.84 × 85,954.70 - Step 4: Simplify right side
153,940.02x = 18,260,288,669.95 - Step 5: Solve for x
x = 18,260,288,669.95/153,940.02 - Step 6: Final answer
x = 118,619.50
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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.