Finding the Fourth Proportional to 121,768.76, 168,041.50 and 68,054.68
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Solution
The fourth proportional to 121,768.76, 168,041.50 and 68,054.68 is: 93,915.80
Step by Step Solution
- Step 1: Write the proportion equation
121,768.76 : 168,041.50 = 68,054.68 : x - Step 2: Convert to fraction form
121,768.76/168,041.50 = 68,054.68/x - Step 3: Cross multiply
121,768.76x = 168,041.50 × 68,054.68 - Step 4: Simplify right side
121,768.76x = 11,436,010,509.22 - Step 5: Solve for x
x = 11,436,010,509.22/121,768.76 - Step 6: Final answer
x = 93,915.80
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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.