Finding the Fourth Proportional to 121,851.58, 168,154.23 and 68,136.70
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Solution
The fourth proportional to 121,851.58, 168,154.23 and 68,136.70 is: 94,028.11
Step by Step Solution
- Step 1: Write the proportion equation
121,851.58 : 168,154.23 = 68,136.70 : x - Step 2: Convert to fraction form
121,851.58/168,154.23 = 68,136.70/x - Step 3: Cross multiply
121,851.58x = 168,154.23 × 68,136.70 - Step 4: Simplify right side
121,851.58x = 11,457,474,323.24 - Step 5: Solve for x
x = 11,457,474,323.24/121,851.58 - Step 6: Final answer
x = 94,028.11
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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.