Finding the Fourth Proportional to 101,401.23, 139,765.98 and 76,206.99
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Solution
The fourth proportional to 101,401.23, 139,765.98 and 76,206.99 is: 105,039.60
Step by Step Solution
- Step 1: Write the proportion equation
101,401.23 : 139,765.98 = 76,206.99 : x - Step 2: Convert to fraction form
101,401.23/139,765.98 = 76,206.99/x - Step 3: Cross multiply
101,401.23x = 139,765.98 × 76,206.99 - Step 4: Simplify right side
101,401.23x = 10,651,144,640.20 - Step 5: Solve for x
x = 10,651,144,640.20/101,401.23 - Step 6: Final answer
x = 105,039.60
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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.