Finding the Fourth Proportional to 121,865.76, 168,190.41 and 68,153.76
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Solution
The fourth proportional to 121,865.76, 168,190.41 and 68,153.76 is: 94,060.95
Step by Step Solution
- Step 1: Write the proportion equation
121,865.76 : 168,190.41 = 68,153.76 : x - Step 2: Convert to fraction form
121,865.76/168,190.41 = 68,153.76/x - Step 3: Cross multiply
121,865.76x = 168,190.41 × 68,153.76 - Step 4: Simplify right side
121,865.76x = 11,462,808,837.44 - Step 5: Solve for x
x = 11,462,808,837.44/121,865.76 - Step 6: Final answer
x = 94,060.95
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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.