Finding the Fourth Proportional to 121,295.80, 181,943.70 and 68,807.80
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Solution
The fourth proportional to 121,295.80, 181,943.70 and 68,807.80 is: 103,211.70
Step by Step Solution
- Step 1: Write the proportion equation
121,295.80 : 181,943.70 = 68,807.80 : x - Step 2: Convert to fraction form
121,295.80/181,943.70 = 68,807.80/x - Step 3: Cross multiply
121,295.80x = 181,943.70 × 68,807.80 - Step 4: Simplify right side
121,295.80x = 12,519,145,720.86 - Step 5: Solve for x
x = 12,519,145,720.86/121,295.80 - Step 6: Final answer
x = 103,211.70
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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.