Finding the Fourth Proportional to 103,638.53, 155,457.80 and 103,638.53
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Solution
The fourth proportional to 103,638.53, 155,457.80 and 103,638.53 is: 155,457.80
Step by Step Solution
- Step 1: Write the proportion equation
103,638.53 : 155,457.80 = 103,638.53 : x - Step 2: Convert to fraction form
103,638.53/155,457.80 = 103,638.53/x - Step 3: Cross multiply
103,638.53x = 155,457.80 × 103,638.53 - Step 4: Simplify right side
103,638.53x = 16,111,417,869.03 - Step 5: Solve for x
x = 16,111,417,869.03/103,638.53 - Step 6: Final answer
x = 155,457.80
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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.