Finding the Fourth Proportional to 139,624.01, 207,856.74 and 138,793.63
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Solution
The fourth proportional to 139,624.01, 207,856.74 and 138,793.63 is: 206,620.55
Step by Step Solution
- Step 1: Write the proportion equation
139,624.01 : 207,856.74 = 138,793.63 : x - Step 2: Convert to fraction form
139,624.01/207,856.74 = 138,793.63/x - Step 3: Cross multiply
139,624.01x = 207,856.74 × 138,793.63 - Step 4: Simplify right side
139,624.01x = 28,849,189,731.31 - Step 5: Solve for x
x = 28,849,189,731.31/139,624.01 - Step 6: Final answer
x = 206,620.55
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Why These Related Problems?
These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.