Finding the Fourth Proportional to 121,501.80, 182,252.70 and 91,321.20
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Solution
The fourth proportional to 121,501.80, 182,252.70 and 91,321.20 is: 136,981.80
Step by Step Solution
- Step 1: Write the proportion equation
121,501.80 : 182,252.70 = 91,321.20 : x - Step 2: Convert to fraction form
121,501.80/182,252.70 = 91,321.20/x - Step 3: Cross multiply
121,501.80x = 182,252.70 × 91,321.20 - Step 4: Simplify right side
121,501.80x = 16,643,535,267.24 - Step 5: Solve for x
x = 16,643,535,267.24/121,501.80 - Step 6: Final answer
x = 136,981.80
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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.