Finding the Fourth Proportional to 121,810.48, 182,417.52 and 100,620.88
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Solution
The fourth proportional to 121,810.48, 182,417.52 and 100,620.88 is: 150,684.99
Step by Step Solution
- Step 1: Write the proportion equation
121,810.48 : 182,417.52 = 100,620.88 : x - Step 2: Convert to fraction form
121,810.48/182,417.52 = 100,620.88/x - Step 3: Cross multiply
121,810.48x = 182,417.52 × 100,620.88 - Step 4: Simplify right side
121,810.48x = 18,355,011,389.82 - Step 5: Solve for x
x = 18,355,011,389.82/121,810.48 - Step 6: Final answer
x = 150,684.99
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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.