Finding the Fourth Proportional to 139,021.98, 207,515.58 and 119,426.46
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Solution
The fourth proportional to 139,021.98, 207,515.58 and 119,426.46 is: 178,265.70
Step by Step Solution
- Step 1: Write the proportion equation
139,021.98 : 207,515.58 = 119,426.46 : x - Step 2: Convert to fraction form
139,021.98/207,515.58 = 119,426.46/x - Step 3: Cross multiply
139,021.98x = 207,515.58 × 119,426.46 - Step 4: Simplify right side
139,021.98x = 24,782,851,114.25 - Step 5: Solve for x
x = 24,782,851,114.25/139,021.98 - Step 6: Final answer
x = 178,265.70
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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.