Finding the Fourth Proportional to 121,688.19, 167,930.10 and 67,975.29
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Solution
The fourth proportional to 121,688.19, 167,930.10 and 67,975.29 is: 93,806.12
Step by Step Solution
- Step 1: Write the proportion equation
121,688.19 : 167,930.10 = 67,975.29 : x - Step 2: Convert to fraction form
121,688.19/167,930.10 = 67,975.29/x - Step 3: Cross multiply
121,688.19x = 167,930.10 × 67,975.29 - Step 4: Simplify right side
121,688.19x = 11,415,097,247.23 - Step 5: Solve for x
x = 11,415,097,247.23/121,688.19 - Step 6: Final answer
x = 93,806.12
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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.