Finding the Fourth Proportional to 121,347.80, 182,021.70 and 68,859.80
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Solution
The fourth proportional to 121,347.80, 182,021.70 and 68,859.80 is: 103,289.70
Step by Step Solution
- Step 1: Write the proportion equation
121,347.80 : 182,021.70 = 68,859.80 : x - Step 2: Convert to fraction form
121,347.80/182,021.70 = 68,859.80/x - Step 3: Cross multiply
121,347.80x = 182,021.70 × 68,859.80 - Step 4: Simplify right side
121,347.80x = 12,533,977,857.66 - Step 5: Solve for x
x = 12,533,977,857.66/121,347.80 - Step 6: Final answer
x = 103,289.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.