Finding the Fourth Proportional to 121,588.19, 167,794.35 and 67,140.21
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Solution
The fourth proportional to 121,588.19, 167,794.35 and 67,140.21 is: 92,654.95
Step by Step Solution
- Step 1: Write the proportion equation
121,588.19 : 167,794.35 = 67,140.21 : x - Step 2: Convert to fraction form
121,588.19/167,794.35 = 67,140.21/x - Step 3: Cross multiply
121,588.19x = 167,794.35 × 67,140.21 - Step 4: Simplify right side
121,588.19x = 11,265,747,895.81 - Step 5: Solve for x
x = 11,265,747,895.81/121,588.19 - Step 6: Final answer
x = 92,654.95
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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.