Finding the Fourth Proportional to 121,283.80, 181,925.70 and 68,795.80
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Solution
The fourth proportional to 121,283.80, 181,925.70 and 68,795.80 is: 103,193.70
Step by Step Solution
- Step 1: Write the proportion equation
121,283.80 : 181,925.70 = 68,795.80 : x - Step 2: Convert to fraction form
121,283.80/181,925.70 = 68,795.80/x - Step 3: Cross multiply
121,283.80x = 181,925.70 × 68,795.80 - Step 4: Simplify right side
121,283.80x = 12,515,724,072.06 - Step 5: Solve for x
x = 12,515,724,072.06/121,283.80 - Step 6: Final answer
x = 103,193.70
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1.5x scale
Why These Related Problems?
These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.