Finding the Fourth Proportional to 139,372.96, 208,903.84 and 60,368.80
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Solution
The fourth proportional to 139,372.96, 208,903.84 and 60,368.80 is: 90,485.80
Step by Step Solution
- Step 1: Write the proportion equation
139,372.96 : 208,903.84 = 60,368.80 : x - Step 2: Convert to fraction form
139,372.96/208,903.84 = 60,368.80/x - Step 3: Cross multiply
139,372.96x = 208,903.84 × 60,368.80 - Step 4: Simplify right side
139,372.96x = 12,611,274,136.19 - Step 5: Solve for x
x = 12,611,274,136.19/139,372.96 - Step 6: Final answer
x = 90,485.80
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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.