Finding the Fourth Proportional to 121,771.76, 168,044.63 and 68,056.81
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Solution
The fourth proportional to 121,771.76, 168,044.63 and 68,056.81 is: 93,918.17
Step by Step Solution
- Step 1: Write the proportion equation
121,771.76 : 168,044.63 = 68,056.81 : x - Step 2: Convert to fraction form
121,771.76/168,044.63 = 68,056.81/x - Step 3: Cross multiply
121,771.76x = 168,044.63 × 68,056.81 - Step 4: Simplify right side
121,771.76x = 11,436,580,695.03 - Step 5: Solve for x
x = 11,436,580,695.03/121,771.76 - Step 6: Final answer
x = 93,918.17
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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.