Finding the Fourth Proportional to 139,758.45, 209,573.15 and 44,970.99
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Solution
The fourth proportional to 139,758.45, 209,573.15 and 44,970.99 is: 67,435.72
Step by Step Solution
- Step 1: Write the proportion equation
139,758.45 : 209,573.15 = 44,970.99 : x - Step 2: Convert to fraction form
139,758.45/209,573.15 = 44,970.99/x - Step 3: Cross multiply
139,758.45x = 209,573.15 × 44,970.99 - Step 4: Simplify right side
139,758.45x = 9,424,711,808.06 - Step 5: Solve for x
x = 9,424,711,808.06/139,758.45 - Step 6: Final answer
x = 67,435.72
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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.