Finding the Fourth Proportional to 149,298.21, 206,027.40 and 81,313.70
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Solution
The fourth proportional to 149,298.21, 206,027.40 and 81,313.70 is: 112,210.65
Step by Step Solution
- Step 1: Write the proportion equation
149,298.21 : 206,027.40 = 81,313.70 : x - Step 2: Convert to fraction form
149,298.21/206,027.40 = 81,313.70/x - Step 3: Cross multiply
149,298.21x = 206,027.40 × 81,313.70 - Step 4: Simplify right side
149,298.21x = 16,752,849,165.24 - Step 5: Solve for x
x = 16,752,849,165.24/149,298.21 - Step 6: Final answer
x = 112,210.65
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Why These Related Problems?
These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.