Finding the Fourth Proportional to 121,281.30, 181,921.95 and 73,847.70
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Solution
The fourth proportional to 121,281.30, 181,921.95 and 73,847.70 is: 110,771.55
Step by Step Solution
- Step 1: Write the proportion equation
121,281.30 : 181,921.95 = 73,847.70 : x - Step 2: Convert to fraction form
121,281.30/181,921.95 = 73,847.70/x - Step 3: Cross multiply
121,281.30x = 181,921.95 × 73,847.70 - Step 4: Simplify right side
121,281.30x = 13,434,517,587.02 - Step 5: Solve for x
x = 13,434,517,587.02/121,281.30 - Step 6: Final answer
x = 110,771.55
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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.