Finding the Fourth Proportional to 121,330.80, 181,558.80 and 81,964.80
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Solution
The fourth proportional to 121,330.80, 181,558.80 and 81,964.80 is: 122,651.72
Step by Step Solution
- Step 1: Write the proportion equation
121,330.80 : 181,558.80 = 81,964.80 : x - Step 2: Convert to fraction form
121,330.80/181,558.80 = 81,964.80/x - Step 3: Cross multiply
121,330.80x = 181,558.80 × 81,964.80 - Step 4: Simplify right side
121,330.80x = 14,881,430,730.24 - Step 5: Solve for x
x = 14,881,430,730.24/121,330.80 - Step 6: Final answer
x = 122,651.72
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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.