Finding the Fourth Proportional to 121,407.10, 182,110.65 and 74,686.30
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Solution
The fourth proportional to 121,407.10, 182,110.65 and 74,686.30 is: 112,029.45
Step by Step Solution
- Step 1: Write the proportion equation
121,407.10 : 182,110.65 = 74,686.30 : x - Step 2: Convert to fraction form
121,407.10/182,110.65 = 74,686.30/x - Step 3: Cross multiply
121,407.10x = 182,110.65 × 74,686.30 - Step 4: Simplify right side
121,407.10x = 13,601,170,639.10 - Step 5: Solve for x
x = 13,601,170,639.10/121,407.10 - Step 6: Final answer
x = 112,029.45
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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.