Finding the Fourth Proportional to 121,940.08, 168,267.72 and 68,220.88
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Solution
The fourth proportional to 121,940.08, 168,267.72 and 68,220.88 is: 94,139.45
Step by Step Solution
- Step 1: Write the proportion equation
121,940.08 : 168,267.72 = 68,220.88 : x - Step 2: Convert to fraction form
121,940.08/168,267.72 = 68,220.88/x - Step 3: Cross multiply
121,940.08x = 168,267.72 × 68,220.88 - Step 4: Simplify right side
121,940.08x = 11,479,371,933.99 - Step 5: Solve for x
x = 11,479,371,933.99/121,940.08 - Step 6: Final answer
x = 94,139.45
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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.