Finding the Fourth Proportional to 100,776.53, 139,128.98 and 66,830.84
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Solution
The fourth proportional to 100,776.53, 139,128.98 and 66,830.84 is: 92,264.60
Step by Step Solution
- Step 1: Write the proportion equation
100,776.53 : 139,128.98 = 66,830.84 : x - Step 2: Convert to fraction form
100,776.53/139,128.98 = 66,830.84/x - Step 3: Cross multiply
100,776.53x = 139,128.98 × 66,830.84 - Step 4: Simplify right side
100,776.53x = 9,298,105,571.94 - Step 5: Solve for x
x = 9,298,105,571.94/100,776.53 - Step 6: Final answer
x = 92,264.60
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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.