Finding the Fourth Proportional to 100,967.85, 139,334.99 and 55,645.88
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Solution
The fourth proportional to 100,967.85, 139,334.99 and 55,645.88 is: 76,790.95
Step by Step Solution
- Step 1: Write the proportion equation
100,967.85 : 139,334.99 = 55,645.88 : x - Step 2: Convert to fraction form
100,967.85/139,334.99 = 55,645.88/x - Step 3: Cross multiply
100,967.85x = 139,334.99 × 55,645.88 - Step 4: Simplify right side
100,967.85x = 7,753,417,158.44 - Step 5: Solve for x
x = 7,753,417,158.44/100,967.85 - Step 6: Final answer
x = 76,790.95
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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.