Finding the Fourth Proportional to 121,706.08, 167,901.60 and 76,353.28
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Solution
The fourth proportional to 121,706.08, 167,901.60 and 76,353.28 is: 105,334.41
Step by Step Solution
- Step 1: Write the proportion equation
121,706.08 : 167,901.60 = 76,353.28 : x - Step 2: Convert to fraction form
121,706.08/167,901.60 = 76,353.28/x - Step 3: Cross multiply
121,706.08x = 167,901.60 × 76,353.28 - Step 4: Simplify right side
121,706.08x = 12,819,837,877.25 - Step 5: Solve for x
x = 12,819,837,877.25/121,706.08 - Step 6: Final answer
x = 105,334.41
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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.