Finding the Fourth Proportional to 121,670.19, 167,903.10 and 67,955.99
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Solution
The fourth proportional to 121,670.19, 167,903.10 and 67,955.99 is: 93,778.28
Step by Step Solution
- Step 1: Write the proportion equation
121,670.19 : 167,903.10 = 67,955.99 : x - Step 2: Convert to fraction form
121,670.19/167,903.10 = 67,955.99/x - Step 3: Cross multiply
121,670.19x = 167,903.10 × 67,955.99 - Step 4: Simplify right side
121,670.19x = 11,410,020,545.05 - Step 5: Solve for x
x = 11,410,020,545.05/121,670.19 - Step 6: Final answer
x = 93,778.28
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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.