Finding the Fourth Proportional to 121,857.99, 167,790.18 and 106,665.63
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Solution
The fourth proportional to 121,857.99, 167,790.18 and 106,665.63 is: 146,871.33
Step by Step Solution
- Step 1: Write the proportion equation
121,857.99 : 167,790.18 = 106,665.63 : x - Step 2: Convert to fraction form
121,857.99/167,790.18 = 106,665.63/x - Step 3: Cross multiply
121,857.99x = 167,790.18 × 106,665.63 - Step 4: Simplify right side
121,857.99x = 17,897,445,257.51 - Step 5: Solve for x
x = 17,897,445,257.51/121,857.99 - Step 6: Final answer
x = 146,871.33
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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.